English verb conjugation
MIGHT UNDERPIN

Regular verb: underpin - underpinned - underpinned

Affirmation

Simple form	V-ing form
I might underpin you might underpin he might underpin we might underpin you might underpin they might underpin	I might be underpinning you might be underpinning he might be underpinning we might be underpinning you might be underpinning they might be underpinning
Perfect	V-ing perfect
I might have underpinned you might have underpinned he might have underpinned we might have underpinned you might have underpinned they might have underpinned	I might have been underpinning you might have been underpinning he might have been underpinning we might have been underpinning you might have been underpinning they might have been underpinning

Negation

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

Interrogative form

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

Interro-negative form

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