could winch
Regular verb: winch - winched- winched

Affirmation 	
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I could winch
you could winch
he could winch
we could winch
you could winch
they could winch 	I could be winching
you could be winching
he could be winching
we could be winching
you could be winching
they could be winching	I could have winched
you could have winched
he could have winched
we could have winched
you could have winched
they could have winched	I could have been winching
you could have been winching
he could have been winching
we could have been winching
you could have been winching
they could have been winching	

Negation 	
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I could not winch
you could not winch
he could not winch
we could not winch
you could not winch
they could not winch 	I could not be winching
you could not be winching
he could not be winching
we could not be winching
you could not be winching
they could not be winching	I could not have winched
you could not have winched
he could not have winched
we could not have winched
you could not have winched
they could not have winched	I could not have been winching
you could not have been winching
he could not have been winching
we could not have been winching
you could not have been winching
they could not have been winching	

Interrogative form 	
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could I winch?
could you winch?
could he winch?
could we winch?
could you winch?
could they winch? 	could I be winching?
could you be winching?
could he be winching?
could we be winching?
could you be winching?
could they be winching? 	could I have winched?
could you have winched?
could he have winched?
could we have winched?
could you have winched?
could they have winched? 	could I have been winching?
could you have been winching?
could he have been winching?
could we have been winching?
could you have been winching?
could they have been winching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not winch?
could you not winch?
could he not winch?
could we not winch?
could you not winch?
could they not winch? 	could I not be winching?
could you not be winching?
could he not be winching?
could we not be winching?
could you not be winching?
could they not be winching? 	could I not have winched?
could you not have winched?
could he not have winched?
could we not have winched?
could you not have winched?
could they not have winched? 	could I not have been winching?
could you not have been winching?
could he not have been winching?
could we not have been winching?
could you not have been winching?
could they not have been winching?