I could surpass you could surpass she could surpass we could surpass you could surpass they could surpass
V-ing form
I could be surpassing you could be surpassing she could be surpassing we could be surpassing you could be surpassing they could be surpassing
Perfect
I could have surpassed you could have surpassed she could have surpassed we could have surpassed you could have surpassed they could have surpassed
V-ing perfect
I could have been surpassing you could have been surpassing she could have been surpassing we could have been surpassing you could have been surpassing they could have been surpassing
Negation
Simple form
I couldn't surpass you couldn't surpass she couldn't surpass we couldn't surpass you couldn't surpass they couldn't surpass
V-ing form
I couldn't be surpassing you couldn't be surpassing she couldn't be surpassing we couldn't be surpassing you couldn't be surpassing they couldn't be surpassing
Perfect
I couldn't have surpassed you couldn't have surpassed she couldn't have surpassed we couldn't have surpassed you couldn't have surpassed they couldn't have surpassed
V-ing perfect
I couldn't have been surpassing you couldn't have been surpassing she couldn't have been surpassing we couldn't have been surpassing you couldn't have been surpassing they couldn't have been surpassing
Interrogative form
Simple form
could I surpass? could you surpass? could she surpass? could we surpass? could you surpass? could they surpass?
V-ing form
could I be surpassing? could you be surpassing? could she be surpassing? could we be surpassing? could you be surpassing? could they be surpassing?
Perfect
could I have surpassed? could you have surpassed? could she have surpassed? could we have surpassed? could you have surpassed? could they have surpassed?
V-ing perfect
could I have been surpassing? could you have been surpassing? could she have been surpassing? could we have been surpassing? could you have been surpassing? could they have been surpassing?
Interro-negative form
Simple form
couldn't I surpass? couldn't you surpass? couldn't she surpass? couldn't we surpass? couldn't you surpass? couldn't they surpass?
V-ing form
couldn't I be surpassing? couldn't you be surpassing? couldn't she be surpassing? couldn't we be surpassing? couldn't you be surpassing? couldn't they be surpassing?
Perfect
couldn't I have surpassed? couldn't you have surpassed? couldn't she have surpassed? couldn't we have surpassed? couldn't you have surpassed? couldn't they have surpassed?
V-ing perfect
couldn't I have been surpassing? couldn't you have been surpassing? couldn't she have been surpassing? couldn't we have been surpassing? couldn't you have been surpassing? couldn't they have been surpassing?