#include<led1>01
#include<led2>02
#include<led3>03

void setup(){
    pinmode( led1,OUTPOUT)
    pinmode( led2,OUTPOUT)
    pinmode( led3,OUTPOUT)
void loop
digitalwrite(led1,high)
digitalwrite(led2,low)
digitalwrite(led3,low)
delay(200)
digitalwrite(led1,low)
digitalwrite(led2,high)
digitalwrite(led3,low)
delay(200)
digitalwrite(led1,low)
digitalwrite(led2,low)
digitalwrite(led3,high)
delay(200)
}