I and have make "i've".
will not
He'll
Need and not
I + will = I'll
The two words that make up the contraction "can't" are "cannot."
"who" and "will" make up the contraction "who'll."
It will.
They will.
"you" and "would" make up the contraction "you'd."
"You" and "would" make up the contraction "you'd".
The word might've is an informal contraction of the auxiliary verbs might and have.
No because there is no 2 separate words that connect to each other and make one word