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 mustn't undercool you mustn't undercool he mustn't undercool we mustn't undercool you mustn't undercool they mustn't undercool	I mustn't be undercooling you mustn't be undercooling he mustn't be undercooling we mustn't be undercooling you mustn't be undercooling they mustn't be undercooling
Perfect	V-ing perfect
I mustn't have undercooled you mustn't have undercooled he mustn't have undercooled we mustn't have undercooled you mustn't have undercooled they mustn't have undercooled	I mustn't have been undercooling you mustn't have been undercooling he mustn't have been undercooling we mustn't have been undercooling you mustn't have been undercooling they mustn't 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
mustn't I undercool? mustn't you undercool? mustn't he undercool? mustn't we undercool? mustn't you undercool? mustn't they undercool?	mustn't I be undercooling? mustn't you be undercooling? mustn't he be undercooling? mustn't we be undercooling? mustn't you be undercooling? mustn't they be undercooling?
Perfect	V-ing perfect
mustn't I have undercooled? mustn't you have undercooled? mustn't he have undercooled? mustn't we have undercooled? mustn't you have undercooled? mustn't they have undercooled?	mustn't I have been undercooling? mustn't you have been undercooling? mustn't he have been undercooling? mustn't we have been undercooling? mustn't you have been undercooling? mustn't they have been undercooling?