English verb conjugation
COULD AMBULATE

Regular verb: ambulate - ambulated - ambulated

Affirmation

Simple form	V-ing form
I could ambulate you could ambulate she could ambulate we could ambulate you could ambulate they could ambulate	I could be ambulating you could be ambulating she could be ambulating we could be ambulating you could be ambulating they could be ambulating
Perfect	V-ing perfect
I could have ambulated you could have ambulated she could have ambulated we could have ambulated you could have ambulated they could have ambulated	I could have been ambulating you could have been ambulating she could have been ambulating we could have been ambulating you could have been ambulating they could have been ambulating

Negation

Simple form	V-ing form
I couldn't ambulate you couldn't ambulate she couldn't ambulate we couldn't ambulate you couldn't ambulate they couldn't ambulate	I couldn't be ambulating you couldn't be ambulating she couldn't be ambulating we couldn't be ambulating you couldn't be ambulating they couldn't be ambulating
Perfect	V-ing perfect
I couldn't have ambulated you couldn't have ambulated she couldn't have ambulated we couldn't have ambulated you couldn't have ambulated they couldn't have ambulated	I couldn't have been ambulating you couldn't have been ambulating she couldn't have been ambulating we couldn't have been ambulating you couldn't have been ambulating they couldn't have been ambulating

Interrogative form

Simple form	V-ing form
could I ambulate? could you ambulate? could she ambulate? could we ambulate? could you ambulate? could they ambulate?	could I be ambulating? could you be ambulating? could she be ambulating? could we be ambulating? could you be ambulating? could they be ambulating?
Perfect	V-ing perfect
could I have ambulated? could you have ambulated? could she have ambulated? could we have ambulated? could you have ambulated? could they have ambulated?	could I have been ambulating? could you have been ambulating? could she have been ambulating? could we have been ambulating? could you have been ambulating? could they have been ambulating?

Interro-negative form

Simple form	V-ing form
couldn't I ambulate? couldn't you ambulate? couldn't she ambulate? couldn't we ambulate? couldn't you ambulate? couldn't they ambulate?	couldn't I be ambulating? couldn't you be ambulating? couldn't she be ambulating? couldn't we be ambulating? couldn't you be ambulating? couldn't they be ambulating?
Perfect	V-ing perfect
couldn't I have ambulated? couldn't you have ambulated? couldn't she have ambulated? couldn't we have ambulated? couldn't you have ambulated? couldn't they have ambulated?	couldn't I have been ambulating? couldn't you have been ambulating? couldn't she have been ambulating? couldn't we have been ambulating? couldn't you have been ambulating? couldn't they have been ambulating?