Loop through an Alphanumeric Set of Strings

I need a function to loop through a set of alphanumeric values. Starting at 000000 AND Ending at ZZZZZZ,
Somewhere in the middle of the list would be BBBCCC or AABBCC or ABCDEF, so all possible permutations, 0-9 A-Z for a six character length, if anyones got code for this would appreciate it,


000000
000001
000002
...
A00001
...
AAA001



...