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 couldn't winch you couldn't winch he couldn't winch we couldn't winch you couldn't winch they couldn't winch	I couldn't be winching you couldn't be winching he couldn't be winching we couldn't be winching you couldn't be winching they couldn't be winching
Perfect	V-ing perfect
I couldn't have winched you couldn't have winched he couldn't have winched we couldn't have winched you couldn't have winched they couldn't have winched	I couldn't have been winching you couldn't have been winching he couldn't have been winching we couldn't have been winching you couldn't have been winching they couldn't 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
couldn't I winch? couldn't you winch? couldn't he winch? couldn't we winch? couldn't you winch? couldn't they winch?	couldn't I be winching? couldn't you be winching? couldn't he be winching? couldn't we be winching? couldn't you be winching? couldn't they be winching?
Perfect	V-ing perfect
couldn't I have winched? couldn't you have winched? couldn't he have winched? couldn't we have winched? couldn't you have winched? couldn't they have winched?	couldn't I have been winching? couldn't you have been winching? couldn't he have been winching? couldn't we have been winching? couldn't you have been winching? couldn't they have been winching?