I could surpass you could surpass he could surpass we could surpass you could surpass they could surpass
V-ing form
I could be surpassing you could be surpassing he could be surpassing we could be surpassing you could be surpassing they could be surpassing
Perfect
I could have surpassed you could have surpassed he 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 he 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 he 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 he 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 he 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 he 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 he surpass? could we surpass? could you surpass? could they surpass?
V-ing form
could I be surpassing? could you be surpassing? could he be surpassing? could we be surpassing? could you be surpassing? could they be surpassing?
Perfect
could I have surpassed? could you have surpassed? could he 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 he 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 he 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 he 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 he 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 he have been surpassing? couldn't we have been surpassing? couldn't you have been surpassing? couldn't they have been surpassing?