I could rainproof you could rainproof she could rainproof we could rainproof you could rainproof they could rainproof
V-ing form
I could be rainproofing you could be rainproofing she could be rainproofing we could be rainproofing you could be rainproofing they could be rainproofing
Perfect
I could have rainproofed you could have rainproofed she could have rainproofed we could have rainproofed you could have rainproofed they could have rainproofed
V-ing perfect
I could have been rainproofing you could have been rainproofing she could have been rainproofing we could have been rainproofing you could have been rainproofing they could have been rainproofing
Negation
Simple form
I could not rainproof you could not rainproof she could not rainproof we could not rainproof you could not rainproof they could not rainproof
V-ing form
I could not be rainproofing you could not be rainproofing she could not be rainproofing we could not be rainproofing you could not be rainproofing they could not be rainproofing
Perfect
I could not have rainproofed you could not have rainproofed she could not have rainproofed we could not have rainproofed you could not have rainproofed they could not have rainproofed
V-ing perfect
I could not have been rainproofing you could not have been rainproofing she could not have been rainproofing we could not have been rainproofing you could not have been rainproofing they could not have been rainproofing
Interrogative form
Simple form
could I rainproof? could you rainproof? could she rainproof? could we rainproof? could you rainproof? could they rainproof?
V-ing form
could I be rainproofing? could you be rainproofing? could she be rainproofing? could we be rainproofing? could you be rainproofing? could they be rainproofing?
Perfect
could I have rainproofed? could you have rainproofed? could she have rainproofed? could we have rainproofed? could you have rainproofed? could they have rainproofed?
V-ing perfect
could I have been rainproofing? could you have been rainproofing? could she have been rainproofing? could we have been rainproofing? could you have been rainproofing? could they have been rainproofing?
Interro-negative form
Simple form
could I not rainproof? could you not rainproof? could she not rainproof? could we not rainproof? could you not rainproof? could they not rainproof?
V-ing form
could I not be rainproofing? could you not be rainproofing? could she not be rainproofing? could we not be rainproofing? could you not be rainproofing? could they not be rainproofing?
Perfect
could I not have rainproofed? could you not have rainproofed? could she not have rainproofed? could we not have rainproofed? could you not have rainproofed? could they not have rainproofed?
V-ing perfect
could I not have been rainproofing? could you not have been rainproofing? could she not have been rainproofing? could we not have been rainproofing? could you not have been rainproofing? could they not have been rainproofing?