const int b1 = 12;  
const int b2 = 13;  
const int b3 = 14;  

const int R1 = 2;  
const int R2 = 4; 
const int R3 = 5;  


void setup() {
  pinMode(b1, INPUT);
  pinMode(b2, INPUT);
  pinMode(b3, INPUT);

  pinMode(R1, OUTPUT);
  pinMode(R2, OUTPUT);
  pinMode(R3, OUTPUT);

}

void loop()
 {
  if (digitalRead(b1) == HIGH)
  {
    digitalWrite(R1, HIGH); 
  } 
  else
  {
    digitalWrite(R1, LOW);   
  }

  if (digitalRead(b2) == HIGH)
   {
    digitalWrite(R2, HIGH); 
   }
   else 
   {
    digitalWrite(R2, LOW);   
   }

   if (digitalRead(b3) == HIGH)
   {
    digitalWrite(R3, HIGH); 
   }
   else 
   {
    digitalWrite(R3, LOW);   
   }
 }