unsigned long prev_time =0;
unsigned long curr_time =0;

unsigned long prev_time1 =0;
unsigned long curr_time1 =0;
int led_pin1 = 2;
int led_pin2 = 8;

//Time delays-------------------------
int ton1=1000;
int toff1=2000;

int ton2=2000;
int toff2=5000;

void setup() {
Serial.begin(9600);
 pinMode (led_pin1 ,OUTPUT); 
 pinMode (led_pin2, OUTPUT); 
 prev_time = millis();
 digitalWrite(led_pin1,HIGH);
 digitalWrite(led_pin2,HIGH);
}

void loop() {
  //FOR BULB 1------------------------------------
   curr_time =millis();
   if((curr_time-prev_time)> ton1){
    digitalWrite(led_pin2,LOW);}

    if((curr_time-prev_time)> ton1+toff1){
    digitalWrite(led_pin2,HIGH);
    prev_time = curr_time;
   }
//For bulb 2 ----------------------------------------------
   curr_time1 =millis();

   if((curr_time1-prev_time1)> ton2){
    digitalWrite(led_pin1,LOW);}

    if((curr_time1-prev_time1)> ton2+toff2){
    digitalWrite(led_pin1,HIGH);
    prev_time1 = curr_time1;
   }
  }