English verb conjugation
COULD INSURE

Regular verb: insure - insured - insured

Affirmation

Simple form	V-ing form
I could insure you could insure he could insure we could insure you could insure they could insure	I could be insuring you could be insuring he could be insuring we could be insuring you could be insuring they could be insuring
Perfect	V-ing perfect
I could have insured you could have insured he could have insured we could have insured you could have insured they could have insured	I could have been insuring you could have been insuring he could have been insuring we could have been insuring you could have been insuring they could have been insuring

Negation

Simple form	V-ing form
I couldn't insure you couldn't insure he couldn't insure we couldn't insure you couldn't insure they couldn't insure	I couldn't be insuring you couldn't be insuring he couldn't be insuring we couldn't be insuring you couldn't be insuring they couldn't be insuring
Perfect	V-ing perfect
I couldn't have insured you couldn't have insured he couldn't have insured we couldn't have insured you couldn't have insured they couldn't have insured	I couldn't have been insuring you couldn't have been insuring he couldn't have been insuring we couldn't have been insuring you couldn't have been insuring they couldn't have been insuring

Interrogative form

Simple form	V-ing form
could I insure? could you insure? could he insure? could we insure? could you insure? could they insure?	could I be insuring? could you be insuring? could he be insuring? could we be insuring? could you be insuring? could they be insuring?
Perfect	V-ing perfect
could I have insured? could you have insured? could he have insured? could we have insured? could you have insured? could they have insured?	could I have been insuring? could you have been insuring? could he have been insuring? could we have been insuring? could you have been insuring? could they have been insuring?

Interro-negative form

Simple form	V-ing form
couldn't I insure? couldn't you insure? couldn't he insure? couldn't we insure? couldn't you insure? couldn't they insure?	couldn't I be insuring? couldn't you be insuring? couldn't he be insuring? couldn't we be insuring? couldn't you be insuring? couldn't they be insuring?
Perfect	V-ing perfect
couldn't I have insured? couldn't you have insured? couldn't he have insured? couldn't we have insured? couldn't you have insured? couldn't they have insured?	couldn't I have been insuring? couldn't you have been insuring? couldn't he have been insuring? couldn't we have been insuring? couldn't you have been insuring? couldn't they have been insuring?