I can soundproof you can soundproof he can soundproof we can soundproof you can soundproof they can soundproof
V-ing form
I can be soundproofing you can be soundproofing he can be soundproofing we can be soundproofing you can be soundproofing they can be soundproofing
Perfect
I can have soundproofed you can have soundproofed he can have soundproofed we can have soundproofed you can have soundproofed they can have soundproofed
V-ing perfect
I can have been soundproofing you can have been soundproofing he can have been soundproofing we can have been soundproofing you can have been soundproofing they can have been soundproofing
Negation
Simple form
I can't soundproof you can't soundproof he can't soundproof we can't soundproof you can't soundproof they can't soundproof
V-ing form
I can't be soundproofing you can't be soundproofing he can't be soundproofing we can't be soundproofing you can't be soundproofing they can't be soundproofing
Perfect
I can't have soundproofed you can't have soundproofed he can't have soundproofed we can't have soundproofed you can't have soundproofed they can't have soundproofed
V-ing perfect
I can't have been soundproofing you can't have been soundproofing he can't have been soundproofing we can't have been soundproofing you can't have been soundproofing they can't have been soundproofing
Interrogative form
Simple form
can I soundproof? can you soundproof? can he soundproof? can we soundproof? can you soundproof? can they soundproof?
V-ing form
can I be soundproofing? can you be soundproofing? can he be soundproofing? can we be soundproofing? can you be soundproofing? can they be soundproofing?
Perfect
can I have soundproofed? can you have soundproofed? can he have soundproofed? can we have soundproofed? can you have soundproofed? can they have soundproofed?
V-ing perfect
can I have been soundproofing? can you have been soundproofing? can he have been soundproofing? can we have been soundproofing? can you have been soundproofing? can they have been soundproofing?
Interro-negative form
Simple form
can't I soundproof? can't you soundproof? can't he soundproof? can't we soundproof? can't you soundproof? can't they soundproof?
V-ing form
can't I be soundproofing? can't you be soundproofing? can't he be soundproofing? can't we be soundproofing? can't you be soundproofing? can't they be soundproofing?
Perfect
can't I have soundproofed? can't you have soundproofed? can't he have soundproofed? can't we have soundproofed? can't you have soundproofed? can't they have soundproofed?
V-ing perfect
can't I have been soundproofing? can't you have been soundproofing? can't he have been soundproofing? can't we have been soundproofing? can't you have been soundproofing? can't they have been soundproofing?