could undercool
Verbo regular: undercool - undercooled- undercooled

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
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	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	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
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	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	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
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? 	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? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
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? 	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?