could towel
Regular verb: towel - towelled- towelled

Affirmation 	
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I could towel
you could towel
he could towel
we could towel
you could towel
they could towel 	I could be towelling
you could be towelling
he could be towelling
we could be towelling
you could be towelling
they could be towelling	I could have towelled
you could have towelled
he could have towelled
we could have towelled
you could have towelled
they could have towelled	I could have been towelling
you could have been towelling
he could have been towelling
we could have been towelling
you could have been towelling
they could have been towelling	

Negation 	
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I could not towel
you could not towel
he could not towel
we could not towel
you could not towel
they could not towel 	I could not be towelling
you could not be towelling
he could not be towelling
we could not be towelling
you could not be towelling
they could not be towelling	I could not have towelled
you could not have towelled
he could not have towelled
we could not have towelled
you could not have towelled
they could not have towelled	I could not have been towelling
you could not have been towelling
he could not have been towelling
we could not have been towelling
you could not have been towelling
they could not have been towelling	

Interrogative form 	
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could I towel?
could you towel?
could he towel?
could we towel?
could you towel?
could they towel? 	could I be towelling?
could you be towelling?
could he be towelling?
could we be towelling?
could you be towelling?
could they be towelling? 	could I have towelled?
could you have towelled?
could he have towelled?
could we have towelled?
could you have towelled?
could they have towelled? 	could I have been towelling?
could you have been towelling?
could he have been towelling?
could we have been towelling?
could you have been towelling?
could they have been towelling? 	

Interro-negative form 	
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could I not towel?
could you not towel?
could he not towel?
could we not towel?
could you not towel?
could they not towel? 	could I not be towelling?
could you not be towelling?
could he not be towelling?
could we not be towelling?
could you not be towelling?
could they not be towelling? 	could I not have towelled?
could you not have towelled?
could he not have towelled?
could we not have towelled?
could you not have towelled?
could they not have towelled? 	could I not have been towelling?
could you not have been towelling?
could he not have been towelling?
could we not have been towelling?
could you not have been towelling?
could they not have been towelling?