English verb conjugation
COULD SHIRK

Regular verb: shirk - shirked - shirked

Affirmation

Simple form	V-ing form
I could shirk you could shirk she could shirk we could shirk you could shirk they could shirk	I could be shirking you could be shirking she could be shirking we could be shirking you could be shirking they could be shirking
Perfect	V-ing perfect
I could have shirked you could have shirked she could have shirked we could have shirked you could have shirked they could have shirked	I could have been shirking you could have been shirking she could have been shirking we could have been shirking you could have been shirking they could have been shirking

Negation

Simple form	V-ing form
I couldn't shirk you couldn't shirk she couldn't shirk we couldn't shirk you couldn't shirk they couldn't shirk	I couldn't be shirking you couldn't be shirking she couldn't be shirking we couldn't be shirking you couldn't be shirking they couldn't be shirking
Perfect	V-ing perfect
I couldn't have shirked you couldn't have shirked she couldn't have shirked we couldn't have shirked you couldn't have shirked they couldn't have shirked	I couldn't have been shirking you couldn't have been shirking she couldn't have been shirking we couldn't have been shirking you couldn't have been shirking they couldn't have been shirking

Interrogative form

Simple form	V-ing form
could I shirk? could you shirk? could she shirk? could we shirk? could you shirk? could they shirk?	could I be shirking? could you be shirking? could she be shirking? could we be shirking? could you be shirking? could they be shirking?
Perfect	V-ing perfect
could I have shirked? could you have shirked? could she have shirked? could we have shirked? could you have shirked? could they have shirked?	could I have been shirking? could you have been shirking? could she have been shirking? could we have been shirking? could you have been shirking? could they have been shirking?

Interro-negative form

Simple form	V-ing form
couldn't I shirk? couldn't you shirk? couldn't she shirk? couldn't we shirk? couldn't you shirk? couldn't they shirk?	couldn't I be shirking? couldn't you be shirking? couldn't she be shirking? couldn't we be shirking? couldn't you be shirking? couldn't they be shirking?
Perfect	V-ing perfect
couldn't I have shirked? couldn't you have shirked? couldn't she have shirked? couldn't we have shirked? couldn't you have shirked? couldn't they have shirked?	couldn't I have been shirking? couldn't you have been shirking? couldn't she have been shirking? couldn't we have been shirking? couldn't you have been shirking? couldn't they have been shirking?