I can release you can release he can release we can release you can release they can release
V-ing form
I can be releasing you can be releasing he can be releasing we can be releasing you can be releasing they can be releasing
Perfect
I can have released you can have released he can have released we can have released you can have released they can have released
V-ing perfect
I can have been releasing you can have been releasing he can have been releasing we can have been releasing you can have been releasing they can have been releasing
Negation
Simple form
I can't release you can't release he can't release we can't release you can't release they can't release
V-ing form
I can't be releasing you can't be releasing he can't be releasing we can't be releasing you can't be releasing they can't be releasing
Perfect
I can't have released you can't have released he can't have released we can't have released you can't have released they can't have released
V-ing perfect
I can't have been releasing you can't have been releasing he can't have been releasing we can't have been releasing you can't have been releasing they can't have been releasing
Interrogative form
Simple form
can I release? can you release? can he release? can we release? can you release? can they release?
V-ing form
can I be releasing? can you be releasing? can he be releasing? can we be releasing? can you be releasing? can they be releasing?
Perfect
can I have released? can you have released? can he have released? can we have released? can you have released? can they have released?
V-ing perfect
can I have been releasing? can you have been releasing? can he have been releasing? can we have been releasing? can you have been releasing? can they have been releasing?
Interro-negative form
Simple form
can't I release? can't you release? can't he release? can't we release? can't you release? can't they release?
V-ing form
can't I be releasing? can't you be releasing? can't he be releasing? can't we be releasing? can't you be releasing? can't they be releasing?
Perfect
can't I have released? can't you have released? can't he have released? can't we have released? can't you have released? can't they have released?
V-ing perfect
can't I have been releasing? can't you have been releasing? can't he have been releasing? can't we have been releasing? can't you have been releasing? can't they have been releasing?