int rowPin1 = 2;
int rowPin2 = 3;
int rowPin3 = 4;
int rowPin4 = 5;
int rowPin5 = 6;

int colPin1 = 7;
int colPin2 = 8;
int colPin3 = 9;
int colPin4 = 10;
int colPin5 = 11;
int timer = 0;
int pb = 12;

void setup()
{
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(7, OUTPUT);
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(12, INPUT);
 
}

void loop(){

  if (digitalRead(pb) == HIGH) {
      digitalWrite(pb, HIGH);
      timer = timer + 1;
  
  
  // FOR LETTER M
  if ((timer >= 0) && (timer <= 20)){    

    digitalWrite(rowPin1,HIGH);
    digitalWrite(rowPin2,HIGH);
    digitalWrite(rowPin3,HIGH);
    digitalWrite(rowPin4,HIGH);
    digitalWrite(rowPin5,HIGH);
    
    digitalWrite(colPin1,LOW);
    digitalWrite(colPin2,HIGH);   
    digitalWrite(colPin3,HIGH);
    digitalWrite(colPin4,HIGH);
    digitalWrite(colPin5,LOW);
    delay(20);

     
    digitalWrite(rowPin1,LOW);
    digitalWrite(rowPin2,HIGH);
    digitalWrite(rowPin3,LOW);
    digitalWrite(rowPin4,LOW);
    digitalWrite(rowPin5,LOW);
    
    digitalWrite(colPin1,HIGH);
    digitalWrite(colPin2,LOW);   
    digitalWrite(colPin3,HIGH);
    digitalWrite(colPin4,LOW);
    digitalWrite(colPin5,HIGH);
    delay(20);


    digitalWrite(rowPin1,LOW);
    digitalWrite(rowPin2,LOW);
    digitalWrite(rowPin3,LOW);
    digitalWrite(rowPin4,LOW);
    digitalWrite(rowPin5,LOW);

    digitalWrite(colPin1,HIGH);
    digitalWrite(colPin2,HIGH);   
    digitalWrite(colPin3,HIGH);
    digitalWrite(colPin4,HIGH);
    digitalWrite(colPin5,HIGH);
    delay(20);
    
    digitalWrite(rowPin1,LOW);
    digitalWrite(rowPin2,LOW);
    digitalWrite(rowPin3,HIGH);
    digitalWrite(rowPin4,LOW);
    digitalWrite(rowPin5,LOW);
    
    digitalWrite(colPin1,HIGH);
    digitalWrite(colPin2,HIGH);   
    digitalWrite(colPin3,LOW);
    digitalWrite(colPin4,HIGH);
    digitalWrite(colPin5,HIGH);
    delay(40);

    digitalWrite(rowPin1,LOW);
    digitalWrite(rowPin2,LOW);
    digitalWrite(rowPin3,LOW);
    digitalWrite(rowPin4,LOW);
    digitalWrite(rowPin5,LOW);

    digitalWrite(colPin1,HIGH);
    digitalWrite(colPin2,HIGH);   
    digitalWrite(colPin3,HIGH);
    digitalWrite(colPin4,HIGH);
    digitalWrite(colPin5,HIGH);

    

   
    
    timer = timer + 1;
    
}

// FOR LETTER R
else if ((timer >= 21) && (timer <= 50)){  

    digitalWrite(rowPin1,HIGH);
    digitalWrite(rowPin2,HIGH);
    digitalWrite(rowPin3,HIGH);
    digitalWrite(rowPin4,HIGH);
    digitalWrite(rowPin5,HIGH);

    digitalWrite(colPin1,LOW);
    digitalWrite(colPin2,HIGH);   
    digitalWrite(colPin3,HIGH);
    digitalWrite(colPin4,HIGH);
    digitalWrite(colPin5,HIGH);
    delay(20);
 

    digitalWrite(rowPin1,HIGH);
    digitalWrite(rowPin2,LOW);
    digitalWrite(rowPin3,HIGH);
    digitalWrite(rowPin4,LOW);
    digitalWrite(rowPin5,LOW);

    digitalWrite(colPin1,HIGH);
    digitalWrite(colPin2,LOW);   
    digitalWrite(colPin3,LOW);
    digitalWrite(colPin4,LOW);
    digitalWrite(colPin5,HIGH);
    delay(20);


    digitalWrite(rowPin1,LOW);
    digitalWrite(rowPin2,LOW);
    digitalWrite(rowPin3,LOW);
    digitalWrite(rowPin4,LOW);
    digitalWrite(rowPin5,LOW);

    digitalWrite(colPin1,HIGH);
    digitalWrite(colPin2,HIGH);   
    digitalWrite(colPin3,HIGH);
    digitalWrite(colPin4,HIGH);
    digitalWrite(colPin5,HIGH);
    delay(5);


    digitalWrite(rowPin1,LOW);
    digitalWrite(rowPin2,HIGH);
    digitalWrite(rowPin3,LOW);
    digitalWrite(rowPin4,HIGH);
    digitalWrite(rowPin5,HIGH);

    digitalWrite(colPin1,HIGH);
    digitalWrite(colPin2,HIGH);   
    digitalWrite(colPin3,HIGH);
    digitalWrite(colPin4,HIGH);
    digitalWrite(colPin5,LOW);
    delay(20);
    
  
    digitalWrite(rowPin1,LOW);
    digitalWrite(rowPin2,LOW);
    digitalWrite(rowPin3,LOW);
    digitalWrite(rowPin4,LOW);
    digitalWrite(rowPin5,LOW);

    digitalWrite(colPin1,HIGH);
    digitalWrite(colPin2,HIGH);   
    digitalWrite(colPin3,HIGH);
    digitalWrite(colPin4,HIGH);
    digitalWrite(colPin5,HIGH);
    



}
// FOR LETTER G
else if ((timer >= 51) && (timer <= 70)){    

    digitalWrite(rowPin1,HIGH);
    digitalWrite(rowPin2,LOW);
    digitalWrite(rowPin3,LOW);
    digitalWrite(rowPin4,LOW);
    digitalWrite(rowPin5,HIGH);

    digitalWrite(colPin1,LOW);
    digitalWrite(colPin2,LOW);   
    digitalWrite(colPin3,LOW);
    digitalWrite(colPin4,LOW);
    digitalWrite(colPin5,LOW);
    delay(20);

    digitalWrite(rowPin1,LOW);
    digitalWrite(rowPin2,LOW);
    digitalWrite(rowPin3,LOW);
    digitalWrite(rowPin4,LOW);
    digitalWrite(rowPin5,LOW);

    digitalWrite(colPin1,HIGH);
    digitalWrite(colPin2,HIGH);   
    digitalWrite(colPin3,HIGH);
    digitalWrite(colPin4,HIGH);
    digitalWrite(colPin5,HIGH);    
    delay(10);

    digitalWrite(rowPin1,HIGH);
    digitalWrite(rowPin2,HIGH);
    digitalWrite(rowPin3,HIGH);
    digitalWrite(rowPin4,HIGH);
    digitalWrite(rowPin5,HIGH);

    digitalWrite(colPin1,LOW);
    digitalWrite(colPin2,HIGH);   
    digitalWrite(colPin3,HIGH);
    digitalWrite(colPin4,HIGH);
    digitalWrite(colPin5,HIGH);
    delay(20);


    digitalWrite(rowPin1,LOW);
    digitalWrite(rowPin2,LOW);
    digitalWrite(rowPin3,HIGH);
    digitalWrite(rowPin4,LOW);
    digitalWrite(rowPin5,LOW);

    digitalWrite(colPin1,HIGH);
    digitalWrite(colPin2,HIGH);   
    digitalWrite(colPin3,LOW);
    digitalWrite(colPin4,LOW);
    digitalWrite(colPin5,LOW);
    delay(20);

    digitalWrite(rowPin1,LOW);
    digitalWrite(rowPin2,LOW);
    digitalWrite(rowPin3,LOW);
    digitalWrite(rowPin4,LOW);
    digitalWrite(rowPin5,LOW);

    digitalWrite(colPin1,HIGH);
    digitalWrite(colPin2,HIGH);   
    digitalWrite(colPin3,HIGH);
    digitalWrite(colPin4,HIGH);
    digitalWrite(colPin5,HIGH);
    delay(20);

    digitalWrite(rowPin1,LOW);
    digitalWrite(rowPin2,LOW);
    digitalWrite(rowPin3,LOW);
    digitalWrite(rowPin4,HIGH);
    digitalWrite(rowPin5,LOW);

    digitalWrite(colPin1,HIGH);
    digitalWrite(colPin2,HIGH);   
    digitalWrite(colPin3,HIGH);
    digitalWrite(colPin4,HIGH);
    digitalWrite(colPin5,LOW);
    delay(10);
    
  

}
else if (timer >= 71){
digitalWrite(pb, LOW);

digitalWrite(rowPin1, LOW);
digitalWrite(rowPin2,LOW);
digitalWrite(rowPin3, LOW);
digitalWrite(rowPin4, LOW);
digitalWrite(rowPin5, LOW);

digitalWrite(colPin1,HIGH);
digitalWrite(colPin2, HIGH);
digitalWrite(colPin3, HIGH);
digitalWrite(colPin4, HIGH);
digitalWrite(colPin5, HIGH);

timer = 0;

}
}
}