try "2725" thats CRCK (crack)
maybe its 3673 (dope)
or 7473 (pipe)
7625 (rock)
if you bought it from a crackhead try and think pof important thing they might use as a password....im sure he forgot his birthday or any numerical sequence like that...but he'll remember "ROCK" or "PIPE"
thats the reason the crackhead sold it to you....he couldnt figure itout either, he stole it from his neighbor