This has been keeping me awake....
Now then, let's go through the logic.
SLEEP = 1, SLEET = 1, so it cant be P or T in last place
SLEET = 1, SLEPT = 1, so it cant be E or P in 4th place
Panther has asserted that IF CRYPT = 0....
Well, as CRYPT DOES = 0, then it cant be the CR from CREEP that = 1
and as we've already dismissed EP as above, the only letter that can score is the middle E
So Panther was right. My apologies, buddy
In my defence, I AM a bit thick.