English verb conjugation
COULD UNDERCOOL

Regular verb: undercool - undercooled - undercooled

Affirmation

Simple form	V-ing form
I could undercool you could undercool she could undercool we could undercool you could undercool they could undercool	I could be undercooling you could be undercooling she could be undercooling we could be undercooling you could be undercooling they could be undercooling
Perfect	V-ing perfect
I could have undercooled you could have undercooled she could have undercooled we could have undercooled you could have undercooled they could have undercooled	I could have been undercooling you could have been undercooling she could have been undercooling we could have been undercooling you could have been undercooling they could have been undercooling

Negation

Simple form	V-ing form
I could not undercool you could not undercool she could not undercool we could not undercool you could not undercool they could not undercool	I could not be undercooling you could not be undercooling she could not be undercooling we could not be undercooling you could not be undercooling they could not be undercooling
Perfect	V-ing perfect
I could not have undercooled you could not have undercooled she could not have undercooled we could not have undercooled you could not have undercooled they could not have undercooled	I could not have been undercooling you could not have been undercooling she could not have been undercooling we could not have been undercooling you could not have been undercooling they could not have been undercooling

Interrogative form

Simple form	V-ing form
could I undercool? could you undercool? could she undercool? could we undercool? could you undercool? could they undercool?	could I be undercooling? could you be undercooling? could she be undercooling? could we be undercooling? could you be undercooling? could they be undercooling?
Perfect	V-ing perfect
could I have undercooled? could you have undercooled? could she have undercooled? could we have undercooled? could you have undercooled? could they have undercooled?	could I have been undercooling? could you have been undercooling? could she have been undercooling? could we have been undercooling? could you have been undercooling? could they have been undercooling?

Interro-negative form

Simple form	V-ing form
could I not undercool? could you not undercool? could she not undercool? could we not undercool? could you not undercool? could they not undercool?	could I not be undercooling? could you not be undercooling? could she not be undercooling? could we not be undercooling? could you not be undercooling? could they not be undercooling?
Perfect	V-ing perfect
could I not have undercooled? could you not have undercooled? could she not have undercooled? could we not have undercooled? could you not have undercooled? could they not have undercooled?	could I not have been undercooling? could you not have been undercooling? could she not have been undercooling? could we not have been undercooling? could you not have been undercooling? could they not have been undercooling?