I can restrain you can restrain he can restrain we can restrain you can restrain they can restrain
V-ing form
I can be restraining you can be restraining he can be restraining we can be restraining you can be restraining they can be restraining
Perfect
I can have restrained you can have restrained he can have restrained we can have restrained you can have restrained they can have restrained
V-ing perfect
I can have been restraining you can have been restraining he can have been restraining we can have been restraining you can have been restraining they can have been restraining
Negation
Simple form
I can't restrain you can't restrain he can't restrain we can't restrain you can't restrain they can't restrain
V-ing form
I can't be restraining you can't be restraining he can't be restraining we can't be restraining you can't be restraining they can't be restraining
Perfect
I can't have restrained you can't have restrained he can't have restrained we can't have restrained you can't have restrained they can't have restrained
V-ing perfect
I can't have been restraining you can't have been restraining he can't have been restraining we can't have been restraining you can't have been restraining they can't have been restraining
Interrogative form
Simple form
can I restrain? can you restrain? can he restrain? can we restrain? can you restrain? can they restrain?
V-ing form
can I be restraining? can you be restraining? can he be restraining? can we be restraining? can you be restraining? can they be restraining?
Perfect
can I have restrained? can you have restrained? can he have restrained? can we have restrained? can you have restrained? can they have restrained?
V-ing perfect
can I have been restraining? can you have been restraining? can he have been restraining? can we have been restraining? can you have been restraining? can they have been restraining?
Interro-negative form
Simple form
can't I restrain? can't you restrain? can't he restrain? can't we restrain? can't you restrain? can't they restrain?
V-ing form
can't I be restraining? can't you be restraining? can't he be restraining? can't we be restraining? can't you be restraining? can't they be restraining?
Perfect
can't I have restrained? can't you have restrained? can't he have restrained? can't we have restrained? can't you have restrained? can't they have restrained?
V-ing perfect
can't I have been restraining? can't you have been restraining? can't he have been restraining? can't we have been restraining? can't you have been restraining? can't they have been restraining?