#define F_CPU 16000000UL
#include<avr/io.h>
#include<util/delay.h>

int main(){
  DDRB |= (1 << 0) | (1 << 1) | (1 << 2);
  DDRD |= (1 << 6) | (1 << 7);
  DDRC |= (1 << 5) | (1 << 4);
  while(1){
    PORTD &= ~(1<<PORTD7);
    PORTC |= (1<<PORTC4);
    _delay_ms(500);
    PORTC &= ~(1<<PORTC4);
    PORTC |= (1<<PORTC5);
    _delay_ms(500);
    PORTC &= ~(1<<PORTC5);
    PORTB |= (1<<PORTB0);
    _delay_ms(500);
    PORTB &= ~(1<< PORTB0);
    PORTB |= (1<<PORTB1);
    _delay_ms(500);
    PORTB &= ~(1<< PORTB1);
    PORTB |= (1<<PORTB2);
    _delay_ms(500);
    PORTB &= ~(1<< PORTB2);
    PORTD |= (1<<PORTD6);
    _delay_ms(500);
    PORTD &= ~(1<< PORTD6);
    PORTD |= (1<<PORTD7);
    _delay_ms(500);
  }
  }