English verb conjugation
COULD ABBREVIATE

Regular verb: abbreviate - abbreviated - abbreviated

Affirmation

Simple form	V-ing form
I could abbreviate you could abbreviate she could abbreviate we could abbreviate you could abbreviate they could abbreviate	I could be abbreviating you could be abbreviating she could be abbreviating we could be abbreviating you could be abbreviating they could be abbreviating
Perfect	V-ing perfect
I could have abbreviated you could have abbreviated she could have abbreviated we could have abbreviated you could have abbreviated they could have abbreviated	I could have been abbreviating you could have been abbreviating she could have been abbreviating we could have been abbreviating you could have been abbreviating they could have been abbreviating

Negation

Simple form	V-ing form
I couldn't abbreviate you couldn't abbreviate she couldn't abbreviate we couldn't abbreviate you couldn't abbreviate they couldn't abbreviate	I couldn't be abbreviating you couldn't be abbreviating she couldn't be abbreviating we couldn't be abbreviating you couldn't be abbreviating they couldn't be abbreviating
Perfect	V-ing perfect
I couldn't have abbreviated you couldn't have abbreviated she couldn't have abbreviated we couldn't have abbreviated you couldn't have abbreviated they couldn't have abbreviated	I couldn't have been abbreviating you couldn't have been abbreviating she couldn't have been abbreviating we couldn't have been abbreviating you couldn't have been abbreviating they couldn't have been abbreviating

Interrogative form

Simple form	V-ing form
could I abbreviate? could you abbreviate? could she abbreviate? could we abbreviate? could you abbreviate? could they abbreviate?	could I be abbreviating? could you be abbreviating? could she be abbreviating? could we be abbreviating? could you be abbreviating? could they be abbreviating?
Perfect	V-ing perfect
could I have abbreviated? could you have abbreviated? could she have abbreviated? could we have abbreviated? could you have abbreviated? could they have abbreviated?	could I have been abbreviating? could you have been abbreviating? could she have been abbreviating? could we have been abbreviating? could you have been abbreviating? could they have been abbreviating?

Interro-negative form

Simple form	V-ing form
couldn't I abbreviate? couldn't you abbreviate? couldn't she abbreviate? couldn't we abbreviate? couldn't you abbreviate? couldn't they abbreviate?	couldn't I be abbreviating? couldn't you be abbreviating? couldn't she be abbreviating? couldn't we be abbreviating? couldn't you be abbreviating? couldn't they be abbreviating?
Perfect	V-ing perfect
couldn't I have abbreviated? couldn't you have abbreviated? couldn't she have abbreviated? couldn't we have abbreviated? couldn't you have abbreviated? couldn't they have abbreviated?	couldn't I have been abbreviating? couldn't you have been abbreviating? couldn't she have been abbreviating? couldn't we have been abbreviating? couldn't you have been abbreviating? couldn't they have been abbreviating?