I can discipline you can discipline he can discipline we can discipline you can discipline they can discipline
V-ing form
I can be disciplining you can be disciplining he can be disciplining we can be disciplining you can be disciplining they can be disciplining
Perfect
I can have disciplined you can have disciplined he can have disciplined we can have disciplined you can have disciplined they can have disciplined
V-ing perfect
I can have been disciplining you can have been disciplining he can have been disciplining we can have been disciplining you can have been disciplining they can have been disciplining
Negation
Simple form
I can't discipline you can't discipline he can't discipline we can't discipline you can't discipline they can't discipline
V-ing form
I can't be disciplining you can't be disciplining he can't be disciplining we can't be disciplining you can't be disciplining they can't be disciplining
Perfect
I can't have disciplined you can't have disciplined he can't have disciplined we can't have disciplined you can't have disciplined they can't have disciplined
V-ing perfect
I can't have been disciplining you can't have been disciplining he can't have been disciplining we can't have been disciplining you can't have been disciplining they can't have been disciplining
Interrogative form
Simple form
can I discipline? can you discipline? can he discipline? can we discipline? can you discipline? can they discipline?
V-ing form
can I be disciplining? can you be disciplining? can he be disciplining? can we be disciplining? can you be disciplining? can they be disciplining?
Perfect
can I have disciplined? can you have disciplined? can he have disciplined? can we have disciplined? can you have disciplined? can they have disciplined?
V-ing perfect
can I have been disciplining? can you have been disciplining? can he have been disciplining? can we have been disciplining? can you have been disciplining? can they have been disciplining?
Interro-negative form
Simple form
can't I discipline? can't you discipline? can't he discipline? can't we discipline? can't you discipline? can't they discipline?
V-ing form
can't I be disciplining? can't you be disciplining? can't he be disciplining? can't we be disciplining? can't you be disciplining? can't they be disciplining?
Perfect
can't I have disciplined? can't you have disciplined? can't he have disciplined? can't we have disciplined? can't you have disciplined? can't they have disciplined?
V-ing perfect
can't I have been disciplining? can't you have been disciplining? can't he have been disciplining? can't we have been disciplining? can't you have been disciplining? can't they have been disciplining?