English verb conjugation
COULD RE-PROOF

Regular verb: re-proof - re-proofed - re-proofed

Affirmation

Simple form	V-ing form
I could re-proof you could re-proof he could re-proof we could re-proof you could re-proof they could re-proof	I could be re-proofing you could be re-proofing he could be re-proofing we could be re-proofing you could be re-proofing they could be re-proofing
Perfect	V-ing perfect
I could have re-proofed you could have re-proofed he could have re-proofed we could have re-proofed you could have re-proofed they could have re-proofed	I could have been re-proofing you could have been re-proofing he could have been re-proofing we could have been re-proofing you could have been re-proofing they could have been re-proofing

Negation

Simple form	V-ing form
I couldn't re-proof you couldn't re-proof he couldn't re-proof we couldn't re-proof you couldn't re-proof they couldn't re-proof	I couldn't be re-proofing you couldn't be re-proofing he couldn't be re-proofing we couldn't be re-proofing you couldn't be re-proofing they couldn't be re-proofing
Perfect	V-ing perfect
I couldn't have re-proofed you couldn't have re-proofed he couldn't have re-proofed we couldn't have re-proofed you couldn't have re-proofed they couldn't have re-proofed	I couldn't have been re-proofing you couldn't have been re-proofing he couldn't have been re-proofing we couldn't have been re-proofing you couldn't have been re-proofing they couldn't have been re-proofing

Interrogative form

Simple form	V-ing form
could I re-proof? could you re-proof? could he re-proof? could we re-proof? could you re-proof? could they re-proof?	could I be re-proofing? could you be re-proofing? could he be re-proofing? could we be re-proofing? could you be re-proofing? could they be re-proofing?
Perfect	V-ing perfect
could I have re-proofed? could you have re-proofed? could he have re-proofed? could we have re-proofed? could you have re-proofed? could they have re-proofed?	could I have been re-proofing? could you have been re-proofing? could he have been re-proofing? could we have been re-proofing? could you have been re-proofing? could they have been re-proofing?

Interro-negative form

Simple form	V-ing form
couldn't I re-proof? couldn't you re-proof? couldn't he re-proof? couldn't we re-proof? couldn't you re-proof? couldn't they re-proof?	couldn't I be re-proofing? couldn't you be re-proofing? couldn't he be re-proofing? couldn't we be re-proofing? couldn't you be re-proofing? couldn't they be re-proofing?
Perfect	V-ing perfect
couldn't I have re-proofed? couldn't you have re-proofed? couldn't he have re-proofed? couldn't we have re-proofed? couldn't you have re-proofed? couldn't they have re-proofed?	couldn't I have been re-proofing? couldn't you have been re-proofing? couldn't he have been re-proofing? couldn't we have been re-proofing? couldn't you have been re-proofing? couldn't they have been re-proofing?