English verb conjugation
COULD AMPUTATE

Regular verb: amputate - amputated - amputated

Affirmation

Simple form	V-ing form
I could amputate you could amputate he could amputate we could amputate you could amputate they could amputate	I could be amputating you could be amputating he could be amputating we could be amputating you could be amputating they could be amputating
Perfect	V-ing perfect
I could have amputated you could have amputated he could have amputated we could have amputated you could have amputated they could have amputated	I could have been amputating you could have been amputating he could have been amputating we could have been amputating you could have been amputating they could have been amputating

Negation

Simple form	V-ing form
I couldn't amputate you couldn't amputate he couldn't amputate we couldn't amputate you couldn't amputate they couldn't amputate	I couldn't be amputating you couldn't be amputating he couldn't be amputating we couldn't be amputating you couldn't be amputating they couldn't be amputating
Perfect	V-ing perfect
I couldn't have amputated you couldn't have amputated he couldn't have amputated we couldn't have amputated you couldn't have amputated they couldn't have amputated	I couldn't have been amputating you couldn't have been amputating he couldn't have been amputating we couldn't have been amputating you couldn't have been amputating they couldn't have been amputating

Interrogative form

Simple form	V-ing form
could I amputate? could you amputate? could he amputate? could we amputate? could you amputate? could they amputate?	could I be amputating? could you be amputating? could he be amputating? could we be amputating? could you be amputating? could they be amputating?
Perfect	V-ing perfect
could I have amputated? could you have amputated? could he have amputated? could we have amputated? could you have amputated? could they have amputated?	could I have been amputating? could you have been amputating? could he have been amputating? could we have been amputating? could you have been amputating? could they have been amputating?

Interro-negative form

Simple form	V-ing form
couldn't I amputate? couldn't you amputate? couldn't he amputate? couldn't we amputate? couldn't you amputate? couldn't they amputate?	couldn't I be amputating? couldn't you be amputating? couldn't he be amputating? couldn't we be amputating? couldn't you be amputating? couldn't they be amputating?
Perfect	V-ing perfect
couldn't I have amputated? couldn't you have amputated? couldn't he have amputated? couldn't we have amputated? couldn't you have amputated? couldn't they have amputated?	couldn't I have been amputating? couldn't you have been amputating? couldn't he have been amputating? couldn't we have been amputating? couldn't you have been amputating? couldn't they have been amputating?