16 LED with register

int latchPin = 9;
int dataPin = 8;
int clockPin = 10;
int dato = 0;
int waitFor = 200;

int first = 0;
int second = 0;

void setup() {
 pinMode (dataPin, OUTPUT);
 pinMode (clockPin, OUTPUT);
 pinMode (latchPin, OUTPUT);
}

void loop()
{
 lightLeds (0b00000000, 0b00000000);

 lightLeds (0b00000001, 0b00000000);
 lightLeds (0b00000011, 0b00000000);
 lightLeds (0b00000111, 0b00000000);
 lightLeds (0b00001111, 0b00000000);

 lightLeds (0b00011111, 0b00000000);
 lightLeds (0b00111111, 0b00000000);
 lightLeds (0b01111111, 0b00000000);
 lightLeds (0b11111111, 0b00000000);

 lightLeds (0b11111111, 0b00000001);
 lightLeds (0b11111111, 0b00000011);
 lightLeds (0b11111111, 0b00000111);
 lightLeds (0b11111111, 0b00001111);

 lightLeds (0b11111111, 0b00011111);
 lightLeds (0b11111111, 0b00111111);
 lightLeds (0b11111111, 0b01111111);
 lightLeds (0b11111111, 0b11111111);

 //

 lightLeds (0b11111111, 0b11111111);
 lightLeds (0b11111111, 0b01111111);
 lightLeds (0b11111111, 0b00111111);
 lightLeds (0b11111111, 0b00011111);

 lightLeds (0b11111111, 0b00001111);
 lightLeds (0b11111111, 0b00000111);
 lightLeds (0b11111111, 0b00000011);
 lightLeds (0b11111111, 0b00000001);

 lightLeds (0b11111111, 0b00000000);
 lightLeds (0b01111111, 0b00000000);
 lightLeds (0b00111111, 0b00000000);
 lightLeds (0b00011111, 0b00000000);

 lightLeds (0b00001111, 0b00000000);
 lightLeds (0b00000111, 0b00000000);
 lightLeds (0b00000011, 0b00000000);
 lightLeds (0b00000001, 0b00000000);

 lightLeds (0b00000000, 0b00000000);

}

void lightLeds (int second, int first)
{
 digitalWrite (latchPin, LOW);
 shiftOut (dataPin, clockPin, LSBFIRST, first);
 shiftOut (dataPin, clockPin, LSBFIRST, second);
 digitalWrite (latchPin, HIGH);
 delay (waitFor);
}