English verb conjugation
COULD INITIAL

Regular verb: initial - initialed - initialed

Affirmation

Simple form	V-ing form
I could initial you could initial she could initial we could initial you could initial they could initial	I could be initialing you could be initialing she could be initialing we could be initialing you could be initialing they could be initialing
Perfect	V-ing perfect
I could have initialed you could have initialed she could have initialed we could have initialed you could have initialed they could have initialed	I could have been initialing you could have been initialing she could have been initialing we could have been initialing you could have been initialing they could have been initialing

Negation

Simple form	V-ing form
I couldn't initial you couldn't initial she couldn't initial we couldn't initial you couldn't initial they couldn't initial	I couldn't be initialing you couldn't be initialing she couldn't be initialing we couldn't be initialing you couldn't be initialing they couldn't be initialing
Perfect	V-ing perfect
I couldn't have initialed you couldn't have initialed she couldn't have initialed we couldn't have initialed you couldn't have initialed they couldn't have initialed	I couldn't have been initialing you couldn't have been initialing she couldn't have been initialing we couldn't have been initialing you couldn't have been initialing they couldn't have been initialing

Interrogative form

Simple form	V-ing form
could I initial? could you initial? could she initial? could we initial? could you initial? could they initial?	could I be initialing? could you be initialing? could she be initialing? could we be initialing? could you be initialing? could they be initialing?
Perfect	V-ing perfect
could I have initialed? could you have initialed? could she have initialed? could we have initialed? could you have initialed? could they have initialed?	could I have been initialing? could you have been initialing? could she have been initialing? could we have been initialing? could you have been initialing? could they have been initialing?

Interro-negative form

Simple form	V-ing form
couldn't I initial? couldn't you initial? couldn't she initial? couldn't we initial? couldn't you initial? couldn't they initial?	couldn't I be initialing? couldn't you be initialing? couldn't she be initialing? couldn't we be initialing? couldn't you be initialing? couldn't they be initialing?
Perfect	V-ing perfect
couldn't I have initialed? couldn't you have initialed? couldn't she have initialed? couldn't we have initialed? couldn't you have initialed? couldn't they have initialed?	couldn't I have been initialing? couldn't you have been initialing? couldn't she have been initialing? couldn't we have been initialing? couldn't you have been initialing? couldn't they have been initialing?