could thrall
Regular verb: thrall - thralled- thralled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could thrall
you could thrall
she could thrall
we could thrall
you could thrall
they could thrall 	I could be thralling
you could be thralling
she could be thralling
we could be thralling
you could be thralling
they could be thralling	I could have thralled
you could have thralled
she could have thralled
we could have thralled
you could have thralled
they could have thralled	I could have been thralling
you could have been thralling
she could have been thralling
we could have been thralling
you could have been thralling
they could have been thralling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not thrall
you could not thrall
she could not thrall
we could not thrall
you could not thrall
they could not thrall 	I could not be thralling
you could not be thralling
she could not be thralling
we could not be thralling
you could not be thralling
they could not be thralling	I could not have thralled
you could not have thralled
she could not have thralled
we could not have thralled
you could not have thralled
they could not have thralled	I could not have been thralling
you could not have been thralling
she could not have been thralling
we could not have been thralling
you could not have been thralling
they could not have been thralling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I thrall?
could you thrall?
could she thrall?
could we thrall?
could you thrall?
could they thrall? 	could I be thralling?
could you be thralling?
could she be thralling?
could we be thralling?
could you be thralling?
could they be thralling? 	could I have thralled?
could you have thralled?
could she have thralled?
could we have thralled?
could you have thralled?
could they have thralled? 	could I have been thralling?
could you have been thralling?
could she have been thralling?
could we have been thralling?
could you have been thralling?
could they have been thralling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not thrall?
could you not thrall?
could she not thrall?
could we not thrall?
could you not thrall?
could they not thrall? 	could I not be thralling?
could you not be thralling?
could she not be thralling?
could we not be thralling?
could you not be thralling?
could they not be thralling? 	could I not have thralled?
could you not have thralled?
could she not have thralled?
could we not have thralled?
could you not have thralled?
could they not have thralled? 	could I not have been thralling?
could you not have been thralling?
could she not have been thralling?
could we not have been thralling?
could you not have been thralling?
could they not have been thralling?