could twist
Verbo regular: twist - twisted- twisted

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could twist
you could twist
she could twist
we could twist
you could twist
they could twist 	I could be twisting
you could be twisting
she could be twisting
we could be twisting
you could be twisting
they could be twisting	I could have twisted
you could have twisted
she could have twisted
we could have twisted
you could have twisted
they could have twisted	I could have been twisting
you could have been twisting
she could have been twisting
we could have been twisting
you could have been twisting
they could have been twisting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't twist
you couldn't twist
she couldn't twist
we couldn't twist
you couldn't twist
they couldn't twist 	I couldn't be twisting
you couldn't be twisting
she couldn't be twisting
we couldn't be twisting
you couldn't be twisting
they couldn't be twisting	I couldn't have twisted
you couldn't have twisted
she couldn't have twisted
we couldn't have twisted
you couldn't have twisted
they couldn't have twisted	I couldn't have been twisting
you couldn't have been twisting
she couldn't have been twisting
we couldn't have been twisting
you couldn't have been twisting
they couldn't have been twisting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I twist?
could you twist?
could she twist?
could we twist?
could you twist?
could they twist? 	could I be twisting?
could you be twisting?
could she be twisting?
could we be twisting?
could you be twisting?
could they be twisting? 	could I have twisted?
could you have twisted?
could she have twisted?
could we have twisted?
could you have twisted?
could they have twisted? 	could I have been twisting?
could you have been twisting?
could she have been twisting?
could we have been twisting?
could you have been twisting?
could they have been twisting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I twist?
couldn't you twist?
couldn't she twist?
couldn't we twist?
couldn't you twist?
couldn't they twist? 	couldn't I be twisting?
couldn't you be twisting?
couldn't she be twisting?
couldn't we be twisting?
couldn't you be twisting?
couldn't they be twisting? 	couldn't I have twisted?
couldn't you have twisted?
couldn't she have twisted?
couldn't we have twisted?
couldn't you have twisted?
couldn't they have twisted? 	couldn't I have been twisting?
couldn't you have been twisting?
couldn't she have been twisting?
couldn't we have been twisting?
couldn't you have been twisting?
couldn't they have been twisting?