could mutate
Verbo regular: mutate - mutated- mutated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could mutate
you could mutate
she could mutate
we could mutate
you could mutate
they could mutate 	I could be mutating
you could be mutating
she could be mutating
we could be mutating
you could be mutating
they could be mutating	I could have mutated
you could have mutated
she could have mutated
we could have mutated
you could have mutated
they could have mutated	I could have been mutating
you could have been mutating
she could have been mutating
we could have been mutating
you could have been mutating
they could have been mutating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not mutate
you could not mutate
she could not mutate
we could not mutate
you could not mutate
they could not mutate 	I could not be mutating
you could not be mutating
she could not be mutating
we could not be mutating
you could not be mutating
they could not be mutating	I could not have mutated
you could not have mutated
she could not have mutated
we could not have mutated
you could not have mutated
they could not have mutated	I could not have been mutating
you could not have been mutating
she could not have been mutating
we could not have been mutating
you could not have been mutating
they could not have been mutating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I mutate?
could you mutate?
could she mutate?
could we mutate?
could you mutate?
could they mutate? 	could I be mutating?
could you be mutating?
could she be mutating?
could we be mutating?
could you be mutating?
could they be mutating? 	could I have mutated?
could you have mutated?
could she have mutated?
could we have mutated?
could you have mutated?
could they have mutated? 	could I have been mutating?
could you have been mutating?
could she have been mutating?
could we have been mutating?
could you have been mutating?
could they have been mutating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not mutate?
could you not mutate?
could she not mutate?
could we not mutate?
could you not mutate?
could they not mutate? 	could I not be mutating?
could you not be mutating?
could she not be mutating?
could we not be mutating?
could you not be mutating?
could they not be mutating? 	could I not have mutated?
could you not have mutated?
could she not have mutated?
could we not have mutated?
could you not have mutated?
could they not have mutated? 	could I not have been mutating?
could you not have been mutating?
could she not have been mutating?
could we not have been mutating?
could you not have been mutating?
could they not have been mutating?