int action=0;


void setup(){
Serial.begin(9600);
for (int i=2; i<=5; i++){pinMode(i, OUTPUT);}


}

void loop(){


action = random(2,8);
Serial.println(action);


switch (action){

case 2:{digitalWrite(2, HIGH);
         digitalWrite (3,LOW); 
          digitalWrite (4,LOW);
          digitalWrite (5,LOW);
        }
break;

case 3:{digitalWrite(3, HIGH);
          digitalWrite (2,LOW); 
          digitalWrite (4,LOW);
          digitalWrite (5,LOW);
        }
break;

case 4:{digitalWrite(4, HIGH);
          digitalWrite (2,LOW); 
          digitalWrite (3,LOW);
          digitalWrite (5,LOW);

      }
break;

case 5:{digitalWrite(5, HIGH);
          digitalWrite (3,LOW); 
          digitalWrite (4,LOW);
          digitalWrite (2,LOW);

}
break;

default:{digitalWrite(5, LOW);
          digitalWrite (3,LOW); 
          digitalWrite (4,LOW);
          digitalWrite (2,LOW);

}


 
 }
delay(1000);


}