English verb conjugation
COULD INTUBATE

Regular verb: intubate - intubated - intubated

Affirmation

Simple form	V-ing form
I could intubate you could intubate she could intubate we could intubate you could intubate they could intubate	I could be intubating you could be intubating she could be intubating we could be intubating you could be intubating they could be intubating
Perfect	V-ing perfect
I could have intubated you could have intubated she could have intubated we could have intubated you could have intubated they could have intubated	I could have been intubating you could have been intubating she could have been intubating we could have been intubating you could have been intubating they could have been intubating

Negation

Simple form	V-ing form
I could not intubate you could not intubate she could not intubate we could not intubate you could not intubate they could not intubate	I could not be intubating you could not be intubating she could not be intubating we could not be intubating you could not be intubating they could not be intubating
Perfect	V-ing perfect
I could not have intubated you could not have intubated she could not have intubated we could not have intubated you could not have intubated they could not have intubated	I could not have been intubating you could not have been intubating she could not have been intubating we could not have been intubating you could not have been intubating they could not have been intubating

Interrogative form

Simple form	V-ing form
could I intubate? could you intubate? could she intubate? could we intubate? could you intubate? could they intubate?	could I be intubating? could you be intubating? could she be intubating? could we be intubating? could you be intubating? could they be intubating?
Perfect	V-ing perfect
could I have intubated? could you have intubated? could she have intubated? could we have intubated? could you have intubated? could they have intubated?	could I have been intubating? could you have been intubating? could she have been intubating? could we have been intubating? could you have been intubating? could they have been intubating?

Interro-negative form

Simple form	V-ing form
could I not intubate? could you not intubate? could she not intubate? could we not intubate? could you not intubate? could they not intubate?	could I not be intubating? could you not be intubating? could she not be intubating? could we not be intubating? could you not be intubating? could they not be intubating?
Perfect	V-ing perfect
could I not have intubated? could you not have intubated? could she not have intubated? could we not have intubated? could you not have intubated? could they not have intubated?	could I not have been intubating? could you not have been intubating? could she not have been intubating? could we not have been intubating? could you not have been intubating? could they not have been intubating?