English verb conjugation
COULD MUCK

Regular verb: muck - mucked - mucked

Affirmation

Simple form	V-ing form
I could muck you could muck she could muck we could muck you could muck they could muck	I could be mucking you could be mucking she could be mucking we could be mucking you could be mucking they could be mucking
Perfect	V-ing perfect
I could have mucked you could have mucked she could have mucked we could have mucked you could have mucked they could have mucked	I could have been mucking you could have been mucking she could have been mucking we could have been mucking you could have been mucking they could have been mucking

Negation

Simple form	V-ing form
I couldn't muck you couldn't muck she couldn't muck we couldn't muck you couldn't muck they couldn't muck	I couldn't be mucking you couldn't be mucking she couldn't be mucking we couldn't be mucking you couldn't be mucking they couldn't be mucking
Perfect	V-ing perfect
I couldn't have mucked you couldn't have mucked she couldn't have mucked we couldn't have mucked you couldn't have mucked they couldn't have mucked	I couldn't have been mucking you couldn't have been mucking she couldn't have been mucking we couldn't have been mucking you couldn't have been mucking they couldn't have been mucking

Interrogative form

Simple form	V-ing form
could I muck? could you muck? could she muck? could we muck? could you muck? could they muck?	could I be mucking? could you be mucking? could she be mucking? could we be mucking? could you be mucking? could they be mucking?
Perfect	V-ing perfect
could I have mucked? could you have mucked? could she have mucked? could we have mucked? could you have mucked? could they have mucked?	could I have been mucking? could you have been mucking? could she have been mucking? could we have been mucking? could you have been mucking? could they have been mucking?

Interro-negative form

Simple form	V-ing form
couldn't I muck? couldn't you muck? couldn't she muck? couldn't we muck? couldn't you muck? couldn't they muck?	couldn't I be mucking? couldn't you be mucking? couldn't she be mucking? couldn't we be mucking? couldn't you be mucking? couldn't they be mucking?
Perfect	V-ing perfect
couldn't I have mucked? couldn't you have mucked? couldn't she have mucked? couldn't we have mucked? couldn't you have mucked? couldn't they have mucked?	couldn't I have been mucking? couldn't you have been mucking? couldn't she have been mucking? couldn't we have been mucking? couldn't you have been mucking? couldn't they have been mucking?