I can commit you can commit he can commit we can commit you can commit they can commit
V-ing form
I can be committing you can be committing he can be committing we can be committing you can be committing they can be committing
Perfect
I can have committed you can have committed he can have committed we can have committed you can have committed they can have committed
V-ing perfect
I can have been committing you can have been committing he can have been committing we can have been committing you can have been committing they can have been committing
Negation
Simple form
I cannot commit you cannot commit he cannot commit we cannot commit you cannot commit they cannot commit
V-ing form
I cannot be committing you cannot be committing he cannot be committing we cannot be committing you cannot be committing they cannot be committing
Perfect
I cannot have committed you cannot have committed he cannot have committed we cannot have committed you cannot have committed they cannot have committed
V-ing perfect
I cannot have been committing you cannot have been committing he cannot have been committing we cannot have been committing you cannot have been committing they cannot have been committing
Interrogative form
Simple form
can I commit? can you commit? can he commit? can we commit? can you commit? can they commit?
V-ing form
can I be committing? can you be committing? can he be committing? can we be committing? can you be committing? can they be committing?
Perfect
can I have committed? can you have committed? can he have committed? can we have committed? can you have committed? can they have committed?
V-ing perfect
can I have been committing? can you have been committing? can he have been committing? can we have been committing? can you have been committing? can they have been committing?
Interro-negative form
Simple form
can I not commit? can you not commit? can he not commit? can we not commit? can you not commit? can they not commit?
V-ing form
can I not be committing? can you not be committing? can he not be committing? can we not be committing? can you not be committing? can they not be committing?
Perfect
can I not have committed? can you not have committed? can he not have committed? can we not have committed? can you not have committed? can they not have committed?
V-ing perfect
can I not have been committing? can you not have been committing? can he not have been committing? can we not have been committing? can you not have been committing? can they not have been committing?