could ceil
Regular verb: ceil - ceiled- ceiled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could ceil
you could ceil
he could ceil
we could ceil
you could ceil
they could ceil 	I could be ceiling
you could be ceiling
he could be ceiling
we could be ceiling
you could be ceiling
they could be ceiling	I could have ceiled
you could have ceiled
he could have ceiled
we could have ceiled
you could have ceiled
they could have ceiled	I could have been ceiling
you could have been ceiling
he could have been ceiling
we could have been ceiling
you could have been ceiling
they could have been ceiling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not ceil
you could not ceil
he could not ceil
we could not ceil
you could not ceil
they could not ceil 	I could not be ceiling
you could not be ceiling
he could not be ceiling
we could not be ceiling
you could not be ceiling
they could not be ceiling	I could not have ceiled
you could not have ceiled
he could not have ceiled
we could not have ceiled
you could not have ceiled
they could not have ceiled	I could not have been ceiling
you could not have been ceiling
he could not have been ceiling
we could not have been ceiling
you could not have been ceiling
they could not have been ceiling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I ceil?
could you ceil?
could he ceil?
could we ceil?
could you ceil?
could they ceil? 	could I be ceiling?
could you be ceiling?
could he be ceiling?
could we be ceiling?
could you be ceiling?
could they be ceiling? 	could I have ceiled?
could you have ceiled?
could he have ceiled?
could we have ceiled?
could you have ceiled?
could they have ceiled? 	could I have been ceiling?
could you have been ceiling?
could he have been ceiling?
could we have been ceiling?
could you have been ceiling?
could they have been ceiling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not ceil?
could you not ceil?
could he not ceil?
could we not ceil?
could you not ceil?
could they not ceil? 	could I not be ceiling?
could you not be ceiling?
could he not be ceiling?
could we not be ceiling?
could you not be ceiling?
could they not be ceiling? 	could I not have ceiled?
could you not have ceiled?
could he not have ceiled?
could we not have ceiled?
could you not have ceiled?
could they not have ceiled? 	could I not have been ceiling?
could you not have been ceiling?
could he not have been ceiling?
could we not have been ceiling?
could you not have been ceiling?
could they not have been ceiling?