How can you "SM_LE"

Without "I"??



How can you be "F_NE" without "I"??



How can you "W_SH" Without "I"?



How can you be "FR_END" without "I"??



"I" am very important!



But this "I" can never achieve

S_CCESS without "U"

and

that makes "U" more important than "I"