Any of these lines of Het Blue Eyed Leucistic when bred/crossbred together will produce a BEL:

Lesser
Butter
Mojave
Vin Russo
Phantom
Mocha (?) is this Amir's line?

They're all slightly different, but virtually the same thing. A "Super Mojave" or more accurately put "Homozygous Mojave" is white but has a purplish head and a stripe down it's back. A Homozygous Phantom even has a whacked out pattern, but when a Phantom and a Lesser are bred together, it still makes a mostly white snake.