English verb conjugation
CAN UNROOF

Regular verb: unroof - unroofed - unroofed

Affirmation

Simple form	V-ing form
I can unroof you can unroof he can unroof we can unroof you can unroof they can unroof	I can be unroofing you can be unroofing he can be unroofing we can be unroofing you can be unroofing they can be unroofing
Perfect	V-ing perfect
I can have unroofed you can have unroofed he can have unroofed we can have unroofed you can have unroofed they can have unroofed	I can have been unroofing you can have been unroofing he can have been unroofing we can have been unroofing you can have been unroofing they can have been unroofing

Negation

Simple form	V-ing form
I cannot unroof you cannot unroof he cannot unroof we cannot unroof you cannot unroof they cannot unroof	I cannot be unroofing you cannot be unroofing he cannot be unroofing we cannot be unroofing you cannot be unroofing they cannot be unroofing
Perfect	V-ing perfect
I cannot have unroofed you cannot have unroofed he cannot have unroofed we cannot have unroofed you cannot have unroofed they cannot have unroofed	I cannot have been unroofing you cannot have been unroofing he cannot have been unroofing we cannot have been unroofing you cannot have been unroofing they cannot have been unroofing

Interrogative form

Simple form	V-ing form
can I unroof? can you unroof? can he unroof? can we unroof? can you unroof? can they unroof?	can I be unroofing? can you be unroofing? can he be unroofing? can we be unroofing? can you be unroofing? can they be unroofing?
Perfect	V-ing perfect
can I have unroofed? can you have unroofed? can he have unroofed? can we have unroofed? can you have unroofed? can they have unroofed?	can I have been unroofing? can you have been unroofing? can he have been unroofing? can we have been unroofing? can you have been unroofing? can they have been unroofing?

Interro-negative form

Simple form	V-ing form
can I not unroof? can you not unroof? can he not unroof? can we not unroof? can you not unroof? can they not unroof?	can I not be unroofing? can you not be unroofing? can he not be unroofing? can we not be unroofing? can you not be unroofing? can they not be unroofing?
Perfect	V-ing perfect
can I not have unroofed? can you not have unroofed? can he not have unroofed? can we not have unroofed? can you not have unroofed? can they not have unroofed?	can I not have been unroofing? can you not have been unroofing? can he not have been unroofing? can we not have been unroofing? can you not have been unroofing? can they not have been unroofing?