English verb conjugation
COULD ANESTHETIZE

Regular verb: anesthetize - anesthetized - anesthetized

Affirmation

Simple form	V-ing form
I could anesthetize you could anesthetize she could anesthetize we could anesthetize you could anesthetize they could anesthetize	I could be anesthetizing you could be anesthetizing she could be anesthetizing we could be anesthetizing you could be anesthetizing they could be anesthetizing
Perfect	V-ing perfect
I could have anesthetized you could have anesthetized she could have anesthetized we could have anesthetized you could have anesthetized they could have anesthetized	I could have been anesthetizing you could have been anesthetizing she could have been anesthetizing we could have been anesthetizing you could have been anesthetizing they could have been anesthetizing

Negation

Simple form	V-ing form
I couldn't anesthetize you couldn't anesthetize she couldn't anesthetize we couldn't anesthetize you couldn't anesthetize they couldn't anesthetize	I couldn't be anesthetizing you couldn't be anesthetizing she couldn't be anesthetizing we couldn't be anesthetizing you couldn't be anesthetizing they couldn't be anesthetizing
Perfect	V-ing perfect
I couldn't have anesthetized you couldn't have anesthetized she couldn't have anesthetized we couldn't have anesthetized you couldn't have anesthetized they couldn't have anesthetized	I couldn't have been anesthetizing you couldn't have been anesthetizing she couldn't have been anesthetizing we couldn't have been anesthetizing you couldn't have been anesthetizing they couldn't have been anesthetizing

Interrogative form

Simple form	V-ing form
could I anesthetize? could you anesthetize? could she anesthetize? could we anesthetize? could you anesthetize? could they anesthetize?	could I be anesthetizing? could you be anesthetizing? could she be anesthetizing? could we be anesthetizing? could you be anesthetizing? could they be anesthetizing?
Perfect	V-ing perfect
could I have anesthetized? could you have anesthetized? could she have anesthetized? could we have anesthetized? could you have anesthetized? could they have anesthetized?	could I have been anesthetizing? could you have been anesthetizing? could she have been anesthetizing? could we have been anesthetizing? could you have been anesthetizing? could they have been anesthetizing?

Interro-negative form

Simple form	V-ing form
couldn't I anesthetize? couldn't you anesthetize? couldn't she anesthetize? couldn't we anesthetize? couldn't you anesthetize? couldn't they anesthetize?	couldn't I be anesthetizing? couldn't you be anesthetizing? couldn't she be anesthetizing? couldn't we be anesthetizing? couldn't you be anesthetizing? couldn't they be anesthetizing?
Perfect	V-ing perfect
couldn't I have anesthetized? couldn't you have anesthetized? couldn't she have anesthetized? couldn't we have anesthetized? couldn't you have anesthetized? couldn't they have anesthetized?	couldn't I have been anesthetizing? couldn't you have been anesthetizing? couldn't she have been anesthetizing? couldn't we have been anesthetizing? couldn't you have been anesthetizing? couldn't they have been anesthetizing?