could vizor
Verbo regular: vizor - vizored- vizored

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could vizor
you could vizor
she could vizor
we could vizor
you could vizor
they could vizor 	I could be vizoring
you could be vizoring
she could be vizoring
we could be vizoring
you could be vizoring
they could be vizoring	I could have vizored
you could have vizored
she could have vizored
we could have vizored
you could have vizored
they could have vizored	I could have been vizoring
you could have been vizoring
she could have been vizoring
we could have been vizoring
you could have been vizoring
they could have been vizoring	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't vizor
you couldn't vizor
she couldn't vizor
we couldn't vizor
you couldn't vizor
they couldn't vizor 	I couldn't be vizoring
you couldn't be vizoring
she couldn't be vizoring
we couldn't be vizoring
you couldn't be vizoring
they couldn't be vizoring	I couldn't have vizored
you couldn't have vizored
she couldn't have vizored
we couldn't have vizored
you couldn't have vizored
they couldn't have vizored	I couldn't have been vizoring
you couldn't have been vizoring
she couldn't have been vizoring
we couldn't have been vizoring
you couldn't have been vizoring
they couldn't have been vizoring	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I vizor?
could you vizor?
could she vizor?
could we vizor?
could you vizor?
could they vizor? 	could I be vizoring?
could you be vizoring?
could she be vizoring?
could we be vizoring?
could you be vizoring?
could they be vizoring? 	could I have vizored?
could you have vizored?
could she have vizored?
could we have vizored?
could you have vizored?
could they have vizored? 	could I have been vizoring?
could you have been vizoring?
could she have been vizoring?
could we have been vizoring?
could you have been vizoring?
could they have been vizoring? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I vizor?
couldn't you vizor?
couldn't she vizor?
couldn't we vizor?
couldn't you vizor?
couldn't they vizor? 	couldn't I be vizoring?
couldn't you be vizoring?
couldn't she be vizoring?
couldn't we be vizoring?
couldn't you be vizoring?
couldn't they be vizoring? 	couldn't I have vizored?
couldn't you have vizored?
couldn't she have vizored?
couldn't we have vizored?
couldn't you have vizored?
couldn't they have vizored? 	couldn't I have been vizoring?
couldn't you have been vizoring?
couldn't she have been vizoring?
couldn't we have been vizoring?
couldn't you have been vizoring?
couldn't they have been vizoring?