I could neutralize you could neutralize she could neutralize we could neutralize you could neutralize they could neutralize
V-ing form
I could be neutralizing you could be neutralizing she could be neutralizing we could be neutralizing you could be neutralizing they could be neutralizing
Perfect
I could have neutralized you could have neutralized she could have neutralized we could have neutralized you could have neutralized they could have neutralized
V-ing perfect
I could have been neutralizing you could have been neutralizing she could have been neutralizing we could have been neutralizing you could have been neutralizing they could have been neutralizing
Negation
Simple form
I couldn't neutralize you couldn't neutralize she couldn't neutralize we couldn't neutralize you couldn't neutralize they couldn't neutralize
V-ing form
I couldn't be neutralizing you couldn't be neutralizing she couldn't be neutralizing we couldn't be neutralizing you couldn't be neutralizing they couldn't be neutralizing
Perfect
I couldn't have neutralized you couldn't have neutralized she couldn't have neutralized we couldn't have neutralized you couldn't have neutralized they couldn't have neutralized
V-ing perfect
I couldn't have been neutralizing you couldn't have been neutralizing she couldn't have been neutralizing we couldn't have been neutralizing you couldn't have been neutralizing they couldn't have been neutralizing
Interrogative form
Simple form
could I neutralize? could you neutralize? could she neutralize? could we neutralize? could you neutralize? could they neutralize?
V-ing form
could I be neutralizing? could you be neutralizing? could she be neutralizing? could we be neutralizing? could you be neutralizing? could they be neutralizing?
Perfect
could I have neutralized? could you have neutralized? could she have neutralized? could we have neutralized? could you have neutralized? could they have neutralized?
V-ing perfect
could I have been neutralizing? could you have been neutralizing? could she have been neutralizing? could we have been neutralizing? could you have been neutralizing? could they have been neutralizing?
Interro-negative form
Simple form
couldn't I neutralize? couldn't you neutralize? couldn't she neutralize? couldn't we neutralize? couldn't you neutralize? couldn't they neutralize?
V-ing form
couldn't I be neutralizing? couldn't you be neutralizing? couldn't she be neutralizing? couldn't we be neutralizing? couldn't you be neutralizing? couldn't they be neutralizing?
Perfect
couldn't I have neutralized? couldn't you have neutralized? couldn't she have neutralized? couldn't we have neutralized? couldn't you have neutralized? couldn't they have neutralized?
V-ing perfect
couldn't I have been neutralizing? couldn't you have been neutralizing? couldn't she have been neutralizing? couldn't we have been neutralizing? couldn't you have been neutralizing? couldn't they have been neutralizing?