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 might not underpin you might not underpin he might not underpin we might not underpin you might not underpin they might not underpin	I might not be underpinning you might not be underpinning he might not be underpinning we might not be underpinning you might not be underpinning they might not be underpinning
Perfect	V-ing perfect
I might not have underpinned you might not have underpinned he might not have underpinned we might not have underpinned you might not have underpinned they might not have underpinned	I might not have been underpinning you might not have been underpinning he might not have been underpinning we might not have been underpinning you might not have been underpinning they might not 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
might I not underpin? might you not underpin? might he not underpin? might we not underpin? might you not underpin? might they not underpin?	might I not be underpinning? might you not be underpinning? might he not be underpinning? might we not be underpinning? might you not be underpinning? might they not be underpinning?
Perfect	V-ing perfect
might I not have underpinned? might you not have underpinned? might he not have underpinned? might we not have underpinned? might you not have underpinned? might they not have underpinned?	might I not have been underpinning? might you not have been underpinning? might he not have been underpinning? might we not have been underpinning? might you not have been underpinning? might they not have been underpinning?