Use the following key while entering the passwords:
L: Leonardo
M: Michaelangelo
D: Donatello
R: Raphael
S: Shredder
To turn crystals into bird eggs, use the "SRDSLLMS" password.
To turn crystals into pumpkins, use "DRSSMRLD" password.
To turn crystals into snowmen, use "LLDMSRMD" password.