English verb conjugation
COULD SHIRK

Regular verb: shirk - shirked - shirked

Affirmation

Simple form	V-ing form
I could shirk you could shirk he could shirk we could shirk you could shirk they could shirk	I could be shirking you could be shirking he 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 he 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 he 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 could not shirk you could not shirk he could not shirk we could not shirk you could not shirk they could not shirk	I could not be shirking you could not be shirking he could not be shirking we could not be shirking you could not be shirking they could not be shirking
Perfect	V-ing perfect
I could not have shirked you could not have shirked he could not have shirked we could not have shirked you could not have shirked they could not have shirked	I could not have been shirking you could not have been shirking he could not have been shirking we could not have been shirking you could not have been shirking they could not have been shirking

Interrogative form

Simple form	V-ing form
could I shirk? could you shirk? could he shirk? could we shirk? could you shirk? could they shirk?	could I be shirking? could you be shirking? could he 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 he 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 he 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
could I not shirk? could you not shirk? could he not shirk? could we not shirk? could you not shirk? could they not shirk?	could I not be shirking? could you not be shirking? could he not be shirking? could we not be shirking? could you not be shirking? could they not be shirking?
Perfect	V-ing perfect
could I not have shirked? could you not have shirked? could he not have shirked? could we not have shirked? could you not have shirked? could they not have shirked?	could I not have been shirking? could you not have been shirking? could he not have been shirking? could we not have been shirking? could you not have been shirking? could they not have been shirking?