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 );

}int a=2;

void loop() {
  if (a==2){

digitalWrite(10, HIGH);
digitalWrite (4, HIGH);

digitalWrite (7,LOW  );
digitalWrite(6, HIGH  );
delay(1500);
digitalWrite(6, LOW );
digitalWrite (11, HIGH );delay(2000
);
digitalWrite(11, LOW);
a++;



  }
if (a==3){
digitalWrite(7, HIGH );
digitalWrite(10, HIGH );

digitalWrite(4, LOW);
digitalWrite (3,HIGH );delay(1500);
digitalWrite(3, LOW );
digitalWrite(2, HIGH );delay(2000);
digitalWrite(2,LOW );

a++;


}
if(a==4){

digitalWrite(4,HIGH );
digitalWrite(7,HIGH );
digitalWrite(10,LOW );
digitalWrite(9,HIGH );delay(1500);
digitalWrite(9, LOW );
digitalWrite(8,HIGH );delay(2000);
digitalWrite(8,LOW  );
a++;

}if(a==5){


a=2;}
  
  
  else {
    
    digitalWrite(2, LOW );
  
  digitalWrite(3, LOW);
  digitalWrite(4, LOW);
  digitalWrite(5, LOW );
  digitalWrite (6,LOW );
  digitalWrite(7, LOW );
  digitalWrite(8, LOW );
  digitalWrite(9,LOW );
  digitalWrite(10,LOW );
  digitalWrite(11,LOW );
  
  
  
  
  
  
  
  }}