English verb conjugation
WILL UNDERPIN

Regular verb: underpin - underpinned - underpinned

Affirmation

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

Negation

Simple form	V-ing form
I will not underpin you will not underpin he will not underpin we will not underpin you will not underpin they will not underpin	I will not be underpinning you will not be underpinning he will not be underpinning we will not be underpinning you will not be underpinning they will not be underpinning
Perfect	V-ing perfect
I will not have underpinned you will not have underpinned he will not have underpinned we will not have underpinned you will not have underpinned they will not have underpinned	I will not have been underpinning you will not have been underpinning he will not have been underpinning we will not have been underpinning you will not have been underpinning they will not have been underpinning

Interrogative form

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