I can decrypt you can decrypt he can decrypt we can decrypt you can decrypt they can decrypt
V-ing form
I can be decrypting you can be decrypting he can be decrypting we can be decrypting you can be decrypting they can be decrypting
Perfect
I can have decrypted you can have decrypted he can have decrypted we can have decrypted you can have decrypted they can have decrypted
V-ing perfect
I can have been decrypting you can have been decrypting he can have been decrypting we can have been decrypting you can have been decrypting they can have been decrypting
Negation
Simple form
I cannot decrypt you cannot decrypt he cannot decrypt we cannot decrypt you cannot decrypt they cannot decrypt
V-ing form
I cannot be decrypting you cannot be decrypting he cannot be decrypting we cannot be decrypting you cannot be decrypting they cannot be decrypting
Perfect
I cannot have decrypted you cannot have decrypted he cannot have decrypted we cannot have decrypted you cannot have decrypted they cannot have decrypted
V-ing perfect
I cannot have been decrypting you cannot have been decrypting he cannot have been decrypting we cannot have been decrypting you cannot have been decrypting they cannot have been decrypting
Interrogative form
Simple form
can I decrypt? can you decrypt? can he decrypt? can we decrypt? can you decrypt? can they decrypt?
V-ing form
can I be decrypting? can you be decrypting? can he be decrypting? can we be decrypting? can you be decrypting? can they be decrypting?
Perfect
can I have decrypted? can you have decrypted? can he have decrypted? can we have decrypted? can you have decrypted? can they have decrypted?
V-ing perfect
can I have been decrypting? can you have been decrypting? can he have been decrypting? can we have been decrypting? can you have been decrypting? can they have been decrypting?
Interro-negative form
Simple form
can I not decrypt? can you not decrypt? can he not decrypt? can we not decrypt? can you not decrypt? can they not decrypt?
V-ing form
can I not be decrypting? can you not be decrypting? can he not be decrypting? can we not be decrypting? can you not be decrypting? can they not be decrypting?
Perfect
can I not have decrypted? can you not have decrypted? can he not have decrypted? can we not have decrypted? can you not have decrypted? can they not have decrypted?
V-ing perfect
can I not have been decrypting? can you not have been decrypting? can he not have been decrypting? can we not have been decrypting? can you not have been decrypting? can they not have been decrypting?