could levitate
Regular verb: levitate - levitated- levitated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could levitate
you could levitate
she could levitate
we could levitate
you could levitate
they could levitate 	I could be levitating
you could be levitating
she could be levitating
we could be levitating
you could be levitating
they could be levitating	I could have levitated
you could have levitated
she could have levitated
we could have levitated
you could have levitated
they could have levitated	I could have been levitating
you could have been levitating
she could have been levitating
we could have been levitating
you could have been levitating
they could have been levitating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't levitate
you couldn't levitate
she couldn't levitate
we couldn't levitate
you couldn't levitate
they couldn't levitate 	I couldn't be levitating
you couldn't be levitating
she couldn't be levitating
we couldn't be levitating
you couldn't be levitating
they couldn't be levitating	I couldn't have levitated
you couldn't have levitated
she couldn't have levitated
we couldn't have levitated
you couldn't have levitated
they couldn't have levitated	I couldn't have been levitating
you couldn't have been levitating
she couldn't have been levitating
we couldn't have been levitating
you couldn't have been levitating
they couldn't have been levitating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I levitate?
could you levitate?
could she levitate?
could we levitate?
could you levitate?
could they levitate? 	could I be levitating?
could you be levitating?
could she be levitating?
could we be levitating?
could you be levitating?
could they be levitating? 	could I have levitated?
could you have levitated?
could she have levitated?
could we have levitated?
could you have levitated?
could they have levitated? 	could I have been levitating?
could you have been levitating?
could she have been levitating?
could we have been levitating?
could you have been levitating?
could they have been levitating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I levitate?
couldn't you levitate?
couldn't she levitate?
couldn't we levitate?
couldn't you levitate?
couldn't they levitate? 	couldn't I be levitating?
couldn't you be levitating?
couldn't she be levitating?
couldn't we be levitating?
couldn't you be levitating?
couldn't they be levitating? 	couldn't I have levitated?
couldn't you have levitated?
couldn't she have levitated?
couldn't we have levitated?
couldn't you have levitated?
couldn't they have levitated? 	couldn't I have been levitating?
couldn't you have been levitating?
couldn't she have been levitating?
couldn't we have been levitating?
couldn't you have been levitating?
couldn't they have been levitating?