I could insure you could insure she could insure we could insure you could insure they could insure
V-ing form
I could be insuring you could be insuring she could be insuring we could be insuring you could be insuring they could be insuring
Perfect
I could have insured you could have insured she could have insured we could have insured you could have insured they could have insured
V-ing perfect
I could have been insuring you could have been insuring she could have been insuring we could have been insuring you could have been insuring they could have been insuring
Negation
Simple form
I could not insure you could not insure she could not insure we could not insure you could not insure they could not insure
V-ing form
I could not be insuring you could not be insuring she could not be insuring we could not be insuring you could not be insuring they could not be insuring
Perfect
I could not have insured you could not have insured she could not have insured we could not have insured you could not have insured they could not have insured
V-ing perfect
I could not have been insuring you could not have been insuring she could not have been insuring we could not have been insuring you could not have been insuring they could not have been insuring
Interrogative form
Simple form
could I insure? could you insure? could she insure? could we insure? could you insure? could they insure?
V-ing form
could I be insuring? could you be insuring? could she be insuring? could we be insuring? could you be insuring? could they be insuring?
Perfect
could I have insured? could you have insured? could she have insured? could we have insured? could you have insured? could they have insured?
V-ing perfect
could I have been insuring? could you have been insuring? could she have been insuring? could we have been insuring? could you have been insuring? could they have been insuring?
Interro-negative form
Simple form
could I not insure? could you not insure? could she not insure? could we not insure? could you not insure? could they not insure?
V-ing form
could I not be insuring? could you not be insuring? could she not be insuring? could we not be insuring? could you not be insuring? could they not be insuring?
Perfect
could I not have insured? could you not have insured? could she not have insured? could we not have insured? could you not have insured? could they not have insured?
V-ing perfect
could I not have been insuring? could you not have been insuring? could she not have been insuring? could we not have been insuring? could you not have been insuring? could they not have been insuring?