English verb conjugation
COULD SNACK

Regular verb: snack - snacked - snacked

Affirmation

Simple form	V-ing form
I could snack you could snack she could snack we could snack you could snack they could snack	I could be snacking you could be snacking she could be snacking we could be snacking you could be snacking they could be snacking
Perfect	V-ing perfect
I could have snacked you could have snacked she could have snacked we could have snacked you could have snacked they could have snacked	I could have been snacking you could have been snacking she could have been snacking we could have been snacking you could have been snacking they could have been snacking

Negation

Simple form	V-ing form
I couldn't snack you couldn't snack she couldn't snack we couldn't snack you couldn't snack they couldn't snack	I couldn't be snacking you couldn't be snacking she couldn't be snacking we couldn't be snacking you couldn't be snacking they couldn't be snacking
Perfect	V-ing perfect
I couldn't have snacked you couldn't have snacked she couldn't have snacked we couldn't have snacked you couldn't have snacked they couldn't have snacked	I couldn't have been snacking you couldn't have been snacking she couldn't have been snacking we couldn't have been snacking you couldn't have been snacking they couldn't have been snacking

Interrogative form

Simple form	V-ing form
could I snack? could you snack? could she snack? could we snack? could you snack? could they snack?	could I be snacking? could you be snacking? could she be snacking? could we be snacking? could you be snacking? could they be snacking?
Perfect	V-ing perfect
could I have snacked? could you have snacked? could she have snacked? could we have snacked? could you have snacked? could they have snacked?	could I have been snacking? could you have been snacking? could she have been snacking? could we have been snacking? could you have been snacking? could they have been snacking?

Interro-negative form

Simple form	V-ing form
couldn't I snack? couldn't you snack? couldn't she snack? couldn't we snack? couldn't you snack? couldn't they snack?	couldn't I be snacking? couldn't you be snacking? couldn't she be snacking? couldn't we be snacking? couldn't you be snacking? couldn't they be snacking?
Perfect	V-ing perfect
couldn't I have snacked? couldn't you have snacked? couldn't she have snacked? couldn't we have snacked? couldn't you have snacked? couldn't they have snacked?	couldn't I have been snacking? couldn't you have been snacking? couldn't she have been snacking? couldn't we have been snacking? couldn't you have been snacking? couldn't they have been snacking?