I can demolish you can demolish he can demolish we can demolish you can demolish they can demolish
V-ing form
I can be demolishing you can be demolishing he can be demolishing we can be demolishing you can be demolishing they can be demolishing
Perfect
I can have demolished you can have demolished he can have demolished we can have demolished you can have demolished they can have demolished
V-ing perfect
I can have been demolishing you can have been demolishing he can have been demolishing we can have been demolishing you can have been demolishing they can have been demolishing
Negation
Simple form
I can't demolish you can't demolish he can't demolish we can't demolish you can't demolish they can't demolish
V-ing form
I can't be demolishing you can't be demolishing he can't be demolishing we can't be demolishing you can't be demolishing they can't be demolishing
Perfect
I can't have demolished you can't have demolished he can't have demolished we can't have demolished you can't have demolished they can't have demolished
V-ing perfect
I can't have been demolishing you can't have been demolishing he can't have been demolishing we can't have been demolishing you can't have been demolishing they can't have been demolishing
Interrogative form
Simple form
can I demolish? can you demolish? can he demolish? can we demolish? can you demolish? can they demolish?
V-ing form
can I be demolishing? can you be demolishing? can he be demolishing? can we be demolishing? can you be demolishing? can they be demolishing?
Perfect
can I have demolished? can you have demolished? can he have demolished? can we have demolished? can you have demolished? can they have demolished?
V-ing perfect
can I have been demolishing? can you have been demolishing? can he have been demolishing? can we have been demolishing? can you have been demolishing? can they have been demolishing?
Interro-negative form
Simple form
can't I demolish? can't you demolish? can't he demolish? can't we demolish? can't you demolish? can't they demolish?
V-ing form
can't I be demolishing? can't you be demolishing? can't he be demolishing? can't we be demolishing? can't you be demolishing? can't they be demolishing?
Perfect
can't I have demolished? can't you have demolished? can't he have demolished? can't we have demolished? can't you have demolished? can't they have demolished?
V-ing perfect
can't I have been demolishing? can't you have been demolishing? can't he have been demolishing? can't we have been demolishing? can't you have been demolishing? can't they have been demolishing?