could contemplate
Regular verb: contemplate - contemplated- contemplated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could contemplate
you could contemplate
he could contemplate
we could contemplate
you could contemplate
they could contemplate 	I could be contemplating
you could be contemplating
he could be contemplating
we could be contemplating
you could be contemplating
they could be contemplating	I could have contemplated
you could have contemplated
he could have contemplated
we could have contemplated
you could have contemplated
they could have contemplated	I could have been contemplating
you could have been contemplating
he could have been contemplating
we could have been contemplating
you could have been contemplating
they could have been contemplating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't contemplate
you couldn't contemplate
he couldn't contemplate
we couldn't contemplate
you couldn't contemplate
they couldn't contemplate 	I couldn't be contemplating
you couldn't be contemplating
he couldn't be contemplating
we couldn't be contemplating
you couldn't be contemplating
they couldn't be contemplating	I couldn't have contemplated
you couldn't have contemplated
he couldn't have contemplated
we couldn't have contemplated
you couldn't have contemplated
they couldn't have contemplated	I couldn't have been contemplating
you couldn't have been contemplating
he couldn't have been contemplating
we couldn't have been contemplating
you couldn't have been contemplating
they couldn't have been contemplating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I contemplate?
could you contemplate?
could he contemplate?
could we contemplate?
could you contemplate?
could they contemplate? 	could I be contemplating?
could you be contemplating?
could he be contemplating?
could we be contemplating?
could you be contemplating?
could they be contemplating? 	could I have contemplated?
could you have contemplated?
could he have contemplated?
could we have contemplated?
could you have contemplated?
could they have contemplated? 	could I have been contemplating?
could you have been contemplating?
could he have been contemplating?
could we have been contemplating?
could you have been contemplating?
could they have been contemplating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I contemplate?
couldn't you contemplate?
couldn't he contemplate?
couldn't we contemplate?
couldn't you contemplate?
couldn't they contemplate? 	couldn't I be contemplating?
couldn't you be contemplating?
couldn't he be contemplating?
couldn't we be contemplating?
couldn't you be contemplating?
couldn't they be contemplating? 	couldn't I have contemplated?
couldn't you have contemplated?
couldn't he have contemplated?
couldn't we have contemplated?
couldn't you have contemplated?
couldn't they have contemplated? 	couldn't I have been contemplating?
couldn't you have been contemplating?
couldn't he have been contemplating?
couldn't we have been contemplating?
couldn't you have been contemplating?
couldn't they have been contemplating?