English verb conjugation
COULD UNCORK

Regular verb: uncork - uncorked - uncorked

Affirmation

Simple form	V-ing form
I could uncork you could uncork she could uncork we could uncork you could uncork they could uncork	I could be uncorking you could be uncorking she could be uncorking we could be uncorking you could be uncorking they could be uncorking
Perfect	V-ing perfect
I could have uncorked you could have uncorked she could have uncorked we could have uncorked you could have uncorked they could have uncorked	I could have been uncorking you could have been uncorking she could have been uncorking we could have been uncorking you could have been uncorking they could have been uncorking

Negation

Simple form	V-ing form
I couldn't uncork you couldn't uncork she couldn't uncork we couldn't uncork you couldn't uncork they couldn't uncork	I couldn't be uncorking you couldn't be uncorking she couldn't be uncorking we couldn't be uncorking you couldn't be uncorking they couldn't be uncorking
Perfect	V-ing perfect
I couldn't have uncorked you couldn't have uncorked she couldn't have uncorked we couldn't have uncorked you couldn't have uncorked they couldn't have uncorked	I couldn't have been uncorking you couldn't have been uncorking she couldn't have been uncorking we couldn't have been uncorking you couldn't have been uncorking they couldn't have been uncorking

Interrogative form

Simple form	V-ing form
could I uncork? could you uncork? could she uncork? could we uncork? could you uncork? could they uncork?	could I be uncorking? could you be uncorking? could she be uncorking? could we be uncorking? could you be uncorking? could they be uncorking?
Perfect	V-ing perfect
could I have uncorked? could you have uncorked? could she have uncorked? could we have uncorked? could you have uncorked? could they have uncorked?	could I have been uncorking? could you have been uncorking? could she have been uncorking? could we have been uncorking? could you have been uncorking? could they have been uncorking?

Interro-negative form

Simple form	V-ing form
couldn't I uncork? couldn't you uncork? couldn't she uncork? couldn't we uncork? couldn't you uncork? couldn't they uncork?	couldn't I be uncorking? couldn't you be uncorking? couldn't she be uncorking? couldn't we be uncorking? couldn't you be uncorking? couldn't they be uncorking?
Perfect	V-ing perfect
couldn't I have uncorked? couldn't you have uncorked? couldn't she have uncorked? couldn't we have uncorked? couldn't you have uncorked? couldn't they have uncorked?	couldn't I have been uncorking? couldn't you have been uncorking? couldn't she have been uncorking? couldn't we have been uncorking? couldn't you have been uncorking? couldn't they have been uncorking?