English verb conjugation SHOULD UNDERPIN

Regular verb: underpin - underpinned - underpinned

Affirmation

Simple form

I'd underpin
you'd underpin
he'd underpin
we'd underpin
you'd underpin
they'd underpin

V-ing form

I'd be underpinning
you'd be underpinning
he'd be underpinning
we'd be underpinning
you'd be underpinning
they'd be underpinning

Perfect

I should've underpinned
you should've underpinned
he should've underpinned
we should've underpinned
you should've underpinned
they should've underpinned

V-ing perfect

I should've been underpinning
you should've been underpinning
he should've been underpinning
we should've been underpinning
you should've been underpinning
they should've been underpinning

Negation

Simple form

I shouldn't underpin
you shouldn't underpin
he shouldn't underpin
we shouldn't underpin
you shouldn't underpin
they shouldn't underpin

V-ing form

I shouldn't be underpinning
you shouldn't be underpinning
he shouldn't be underpinning
we shouldn't be underpinning
you shouldn't be underpinning
they shouldn't be underpinning

Perfect

I shouldn't have underpinned
you shouldn't have underpinned
he shouldn't have underpinned
we shouldn't have underpinned
you shouldn't have underpinned
they shouldn't have underpinned

V-ing perfect

I shouldn't have been underpinning
you shouldn't have been underpinning
he shouldn't have been underpinning
we shouldn't have been underpinning
you shouldn't have been underpinning
they shouldn't have been underpinning

Interrogative form

Simple form

should I underpin?
should you underpin?
should he underpin?
should we underpin?
should you underpin?
should they underpin?

V-ing form

should I be underpinning?
should you be underpinning?
should he be underpinning?
should we be underpinning?
should you be underpinning?
should they be underpinning?

Perfect

should I have underpinned?
should you have underpinned?
should he have underpinned?
should we have underpinned?
should you have underpinned?
should they have underpinned?

V-ing perfect

should I have been underpinning?
should you have been underpinning?
should he have been underpinning?
should we have been underpinning?
should you have been underpinning?
should they have been underpinning?

Interro-negative form

Simple form

shouldn't I underpin?
shouldn't you underpin?
shouldn't he underpin?
shouldn't we underpin?
shouldn't you underpin?
shouldn't they underpin?

V-ing form

shouldn't I be underpinning?
shouldn't you be underpinning?
shouldn't he be underpinning?
shouldn't we be underpinning?
shouldn't you be underpinning?
shouldn't they be underpinning?

Perfect

shouldn't I have underpinned?
shouldn't you have underpinned?
shouldn't he have underpinned?
shouldn't we have underpinned?
shouldn't you have underpinned?
shouldn't they have underpinned?

V-ing perfect

shouldn't I have been underpinning?
shouldn't you have been underpinning?
shouldn't he have been underpinning?
shouldn't we have been underpinning?
shouldn't you have been underpinning?
shouldn't they have been underpinning?

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