could collimate
Verbo regular: collimate - collimated- collimated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could collimate
you could collimate
he could collimate
we could collimate
you could collimate
they could collimate 	I could be collimating
you could be collimating
he could be collimating
we could be collimating
you could be collimating
they could be collimating	I could have collimated
you could have collimated
he could have collimated
we could have collimated
you could have collimated
they could have collimated	I could have been collimating
you could have been collimating
he could have been collimating
we could have been collimating
you could have been collimating
they could have been collimating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't collimate
you couldn't collimate
he couldn't collimate
we couldn't collimate
you couldn't collimate
they couldn't collimate 	I couldn't be collimating
you couldn't be collimating
he couldn't be collimating
we couldn't be collimating
you couldn't be collimating
they couldn't be collimating	I couldn't have collimated
you couldn't have collimated
he couldn't have collimated
we couldn't have collimated
you couldn't have collimated
they couldn't have collimated	I couldn't have been collimating
you couldn't have been collimating
he couldn't have been collimating
we couldn't have been collimating
you couldn't have been collimating
they couldn't have been collimating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I collimate?
could you collimate?
could he collimate?
could we collimate?
could you collimate?
could they collimate? 	could I be collimating?
could you be collimating?
could he be collimating?
could we be collimating?
could you be collimating?
could they be collimating? 	could I have collimated?
could you have collimated?
could he have collimated?
could we have collimated?
could you have collimated?
could they have collimated? 	could I have been collimating?
could you have been collimating?
could he have been collimating?
could we have been collimating?
could you have been collimating?
could they have been collimating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I collimate?
couldn't you collimate?
couldn't he collimate?
couldn't we collimate?
couldn't you collimate?
couldn't they collimate? 	couldn't I be collimating?
couldn't you be collimating?
couldn't he be collimating?
couldn't we be collimating?
couldn't you be collimating?
couldn't they be collimating? 	couldn't I have collimated?
couldn't you have collimated?
couldn't he have collimated?
couldn't we have collimated?
couldn't you have collimated?
couldn't they have collimated? 	couldn't I have been collimating?
couldn't you have been collimating?
couldn't he have been collimating?
couldn't we have been collimating?
couldn't you have been collimating?
couldn't they have been collimating?