English verb conjugation
COULD WINCH

Regular verb: winch - winched - winched

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Simple form	V-ing form
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?