could callous
Verbo regular: callous - calloused- calloused

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could callous
you could callous
she could callous
we could callous
you could callous
they could callous 	I could be callousing
you could be callousing
she could be callousing
we could be callousing
you could be callousing
they could be callousing	I could have calloused
you could have calloused
she could have calloused
we could have calloused
you could have calloused
they could have calloused	I could have been callousing
you could have been callousing
she could have been callousing
we could have been callousing
you could have been callousing
they could have been callousing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not callous
you could not callous
she could not callous
we could not callous
you could not callous
they could not callous 	I could not be callousing
you could not be callousing
she could not be callousing
we could not be callousing
you could not be callousing
they could not be callousing	I could not have calloused
you could not have calloused
she could not have calloused
we could not have calloused
you could not have calloused
they could not have calloused	I could not have been callousing
you could not have been callousing
she could not have been callousing
we could not have been callousing
you could not have been callousing
they could not have been callousing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I callous?
could you callous?
could she callous?
could we callous?
could you callous?
could they callous? 	could I be callousing?
could you be callousing?
could she be callousing?
could we be callousing?
could you be callousing?
could they be callousing? 	could I have calloused?
could you have calloused?
could she have calloused?
could we have calloused?
could you have calloused?
could they have calloused? 	could I have been callousing?
could you have been callousing?
could she have been callousing?
could we have been callousing?
could you have been callousing?
could they have been callousing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not callous?
could you not callous?
could she not callous?
could we not callous?
could you not callous?
could they not callous? 	could I not be callousing?
could you not be callousing?
could she not be callousing?
could we not be callousing?
could you not be callousing?
could they not be callousing? 	could I not have calloused?
could you not have calloused?
could she not have calloused?
could we not have calloused?
could you not have calloused?
could they not have calloused? 	could I not have been callousing?
could you not have been callousing?
could she not have been callousing?
could we not have been callousing?
could you not have been callousing?
could they not have been callousing?