English verb conjugation
WILL UNDERPIN

Regular verb: underpin - underpinned - underpinned

Affirmation

Simple form	V-ing form
I'll underpin you'll underpin she'll underpin we'll underpin you'll underpin they'll underpin	I'll be underpinning you'll be underpinning she'll be underpinning we'll be underpinning you'll be underpinning they'll be underpinning
Perfect	V-ing perfect
I'll have underpinned you'll have underpinned she'll have underpinned we'll have underpinned you'll have underpinned they'll have underpinned	I'll have been underpinning you'll have been underpinning she'll have been underpinning we'll have been underpinning you'll have been underpinning they'll have been underpinning

Negation

Simple form	V-ing form
I won't underpin you won't underpin she won't underpin we won't underpin you won't underpin they won't underpin	I won't be underpinning you won't be underpinning she won't be underpinning we won't be underpinning you won't be underpinning they won't be underpinning
Perfect	V-ing perfect
I won't have underpinned you won't have underpinned she won't have underpinned we won't have underpinned you won't have underpinned they won't have underpinned	I won't have been underpinning you won't have been underpinning she won't have been underpinning we won't have been underpinning you won't have been underpinning they won't have been underpinning

Interrogative form

Simple form	V-ing form
will I underpin? will you underpin? will she underpin? will we underpin? will you underpin? will they underpin?	will I be underpinning? will you be underpinning? will she be underpinning? will we be underpinning? will you be underpinning? will they be underpinning?
Perfect	V-ing perfect
will I have underpinned? will you have underpinned? will she have underpinned? will we have underpinned? will you have underpinned? will they have underpinned?	will I have been underpinning? will you have been underpinning? will she have been underpinning? will we have been underpinning? will you have been underpinning? will they have been underpinning?

Interro-negative form

Simple form	V-ing form
won't I underpin? won't you underpin? won't she underpin? won't we underpin? won't you underpin? won't they underpin?	won't I be underpinning? won't you be underpinning? won't she be underpinning? won't we be underpinning? won't you be underpinning? won't they be underpinning?
Perfect	V-ing perfect
won't I have underpinned? won't you have underpinned? won't she have underpinned? won't we have underpinned? won't you have underpinned? won't they have underpinned?	won't I have been underpinning? won't you have been underpinning? won't she have been underpinning? won't we have been underpinning? won't you have been underpinning? won't they have been underpinning?