English verb conjugation
MUST UNDERCOOL

Regular verb: undercool - undercooled - undercooled

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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