English verb conjugation
COULD STABILIZE

Regular verb: stabilize - stabilized - stabilized

Affirmation

Simple form	V-ing form
I could stabilize you could stabilize she could stabilize we could stabilize you could stabilize they could stabilize	I could be stabilizing you could be stabilizing she could be stabilizing we could be stabilizing you could be stabilizing they could be stabilizing
Perfect	V-ing perfect
I could have stabilized you could have stabilized she could have stabilized we could have stabilized you could have stabilized they could have stabilized	I could have been stabilizing you could have been stabilizing she could have been stabilizing we could have been stabilizing you could have been stabilizing they could have been stabilizing

Negation

Simple form	V-ing form
I couldn't stabilize you couldn't stabilize she couldn't stabilize we couldn't stabilize you couldn't stabilize they couldn't stabilize	I couldn't be stabilizing you couldn't be stabilizing she couldn't be stabilizing we couldn't be stabilizing you couldn't be stabilizing they couldn't be stabilizing
Perfect	V-ing perfect
I couldn't have stabilized you couldn't have stabilized she couldn't have stabilized we couldn't have stabilized you couldn't have stabilized they couldn't have stabilized	I couldn't have been stabilizing you couldn't have been stabilizing she couldn't have been stabilizing we couldn't have been stabilizing you couldn't have been stabilizing they couldn't have been stabilizing

Interrogative form

Simple form	V-ing form
could I stabilize? could you stabilize? could she stabilize? could we stabilize? could you stabilize? could they stabilize?	could I be stabilizing? could you be stabilizing? could she be stabilizing? could we be stabilizing? could you be stabilizing? could they be stabilizing?
Perfect	V-ing perfect
could I have stabilized? could you have stabilized? could she have stabilized? could we have stabilized? could you have stabilized? could they have stabilized?	could I have been stabilizing? could you have been stabilizing? could she have been stabilizing? could we have been stabilizing? could you have been stabilizing? could they have been stabilizing?

Interro-negative form

Simple form	V-ing form
couldn't I stabilize? couldn't you stabilize? couldn't she stabilize? couldn't we stabilize? couldn't you stabilize? couldn't they stabilize?	couldn't I be stabilizing? couldn't you be stabilizing? couldn't she be stabilizing? couldn't we be stabilizing? couldn't you be stabilizing? couldn't they be stabilizing?
Perfect	V-ing perfect
couldn't I have stabilized? couldn't you have stabilized? couldn't she have stabilized? couldn't we have stabilized? couldn't you have stabilized? couldn't they have stabilized?	couldn't I have been stabilizing? couldn't you have been stabilizing? couldn't she have been stabilizing? couldn't we have been stabilizing? couldn't you have been stabilizing? couldn't they have been stabilizing?