(I) In this alphametic, each capital letter represents a different base eleven digit from 0 to A, where none of the numbers can contain any leading zero.
STORY = FROM + STAR
Determine the value of Y for which the above equation has precisely one solution.
(II) In this alphametic, each capital letter represents a different base ten digit from 0 to 9, where none of the numbers can contain any leading zero.
WE + TO + WEE + WORD = THINK
Determine the value of D for which the above equation has precisely one solution.