could rowel
Regular verb: rowel - roweled- roweled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could rowel
you could rowel
he could rowel
we could rowel
you could rowel
they could rowel 	I could be roweling
you could be roweling
he could be roweling
we could be roweling
you could be roweling
they could be roweling	I could have roweled
you could have roweled
he could have roweled
we could have roweled
you could have roweled
they could have roweled	I could have been roweling
you could have been roweling
he could have been roweling
we could have been roweling
you could have been roweling
they could have been roweling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not rowel
you could not rowel
he could not rowel
we could not rowel
you could not rowel
they could not rowel 	I could not be roweling
you could not be roweling
he could not be roweling
we could not be roweling
you could not be roweling
they could not be roweling	I could not have roweled
you could not have roweled
he could not have roweled
we could not have roweled
you could not have roweled
they could not have roweled	I could not have been roweling
you could not have been roweling
he could not have been roweling
we could not have been roweling
you could not have been roweling
they could not have been roweling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I rowel?
could you rowel?
could he rowel?
could we rowel?
could you rowel?
could they rowel? 	could I be roweling?
could you be roweling?
could he be roweling?
could we be roweling?
could you be roweling?
could they be roweling? 	could I have roweled?
could you have roweled?
could he have roweled?
could we have roweled?
could you have roweled?
could they have roweled? 	could I have been roweling?
could you have been roweling?
could he have been roweling?
could we have been roweling?
could you have been roweling?
could they have been roweling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not rowel?
could you not rowel?
could he not rowel?
could we not rowel?
could you not rowel?
could they not rowel? 	could I not be roweling?
could you not be roweling?
could he not be roweling?
could we not be roweling?
could you not be roweling?
could they not be roweling? 	could I not have roweled?
could you not have roweled?
could he not have roweled?
could we not have roweled?
could you not have roweled?
could they not have roweled? 	could I not have been roweling?
could you not have been roweling?
could he not have been roweling?
could we not have been roweling?
could you not have been roweling?
could they not have been roweling?