can undercool
Regular verb: undercool - undercooled- undercooled

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

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

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

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