StarbuckyTX

Remove 6 letters from this sequence (KOBEHAAYVIORKP) to reveal a familiar English word.

I make two people out of one. What am I?

The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.