int latchPin = 11;
int clockPin = 9;
int dataPin = 12;

byte LEDs = 0x88;
byte LED1s = 0b10101010;
byte LED2s = 0b01010101;

int dur = 250;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(latchPin, OUTPUT);
  pinMode(clockPin, OUTPUT);
  pinMode(dataPin, OUTPUT);
}

void loop() {
  //counter clockwise
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, LSBFIRST, LED1s);
  digitalWrite(latchPin, HIGH);
  delay(dur);

  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, LSBFIRST, LED2s);
  digitalWrite(latchPin, HIGH);
  delay(dur);
}