could twit
Verbo regular: twit - twitted- twitted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could twit
you could twit
she could twit
we could twit
you could twit
they could twit 	I could be twitting
you could be twitting
she could be twitting
we could be twitting
you could be twitting
they could be twitting	I could have twitted
you could have twitted
she could have twitted
we could have twitted
you could have twitted
they could have twitted	I could have been twitting
you could have been twitting
she could have been twitting
we could have been twitting
you could have been twitting
they could have been twitting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not twit
you could not twit
she could not twit
we could not twit
you could not twit
they could not twit 	I could not be twitting
you could not be twitting
she could not be twitting
we could not be twitting
you could not be twitting
they could not be twitting	I could not have twitted
you could not have twitted
she could not have twitted
we could not have twitted
you could not have twitted
they could not have twitted	I could not have been twitting
you could not have been twitting
she could not have been twitting
we could not have been twitting
you could not have been twitting
they could not have been twitting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I twit?
could you twit?
could she twit?
could we twit?
could you twit?
could they twit? 	could I be twitting?
could you be twitting?
could she be twitting?
could we be twitting?
could you be twitting?
could they be twitting? 	could I have twitted?
could you have twitted?
could she have twitted?
could we have twitted?
could you have twitted?
could they have twitted? 	could I have been twitting?
could you have been twitting?
could she have been twitting?
could we have been twitting?
could you have been twitting?
could they have been twitting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not twit?
could you not twit?
could she not twit?
could we not twit?
could you not twit?
could they not twit? 	could I not be twitting?
could you not be twitting?
could she not be twitting?
could we not be twitting?
could you not be twitting?
could they not be twitting? 	could I not have twitted?
could you not have twitted?
could she not have twitted?
could we not have twitted?
could you not have twitted?
could they not have twitted? 	could I not have been twitting?
could you not have been twitting?
could she not have been twitting?
could we not have been twitting?
could you not have been twitting?
could they not have been twitting?