int x;
int y;
void setup () {
pinMode(12, OUTPUT);
pinMode(11, OUTPUT);
pinMode(10, OUTPUT);
pinMode(9, OUTPUT);
pinMode(8, OUTPUT);
pinMode(7, INPUT);
pinMode(6, INPUT);
}

void loop () {
x=digitalRead(6);
y=digitalRead(7);
if(y==1){
digitalWrite(12, HIGH);
delay(200);
digitalWrite(12, LOW);
delay(200);
digitalWrite(11, HIGH);
delay(200);
digitalWrite(11, LOW);
delay(200);
digitalWrite(10, HIGH);
delay(200);
digitalWrite(10, LOW);
delay(200);
digitalWrite(9, HIGH);
delay(200);
digitalWrite(9, LOW);
delay(200);
digitalWrite(8, HIGH);
delay(200);
digitalWrite(8, LOW);
delay(200);
}else{
if(x==1){
digitalWrite(8, HIGH);
delay(200);
digitalWrite(8, LOW);
delay(200);
digitalWrite(9, HIGH);
delay(200);
digitalWrite(9, LOW);
delay(200);
digitalWrite(10, HIGH);
delay(200);
digitalWrite(10, LOW);
delay(200);
digitalWrite(11, HIGH);
delay(200);
digitalWrite(11, LOW);
delay(200);
digitalWrite(12, HIGH);
delay(200);
digitalWrite(12, LOW);
delay(200);
}
}
}