I can decrypt you can decrypt she can decrypt we can decrypt you can decrypt they can decrypt
V-ing form
I can be decrypting you can be decrypting she can be decrypting we can be decrypting you can be decrypting they can be decrypting
Perfect
I can have decrypted you can have decrypted she 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 she can have been decrypting we can have been decrypting you can have been decrypting they can have been decrypting
Negation
Simple form
I can't decrypt you can't decrypt she can't decrypt we can't decrypt you can't decrypt they can't decrypt
V-ing form
I can't be decrypting you can't be decrypting she can't be decrypting we can't be decrypting you can't be decrypting they can't be decrypting
Perfect
I can't have decrypted you can't have decrypted she can't have decrypted we can't have decrypted you can't have decrypted they can't have decrypted
V-ing perfect
I can't have been decrypting you can't have been decrypting she can't have been decrypting we can't have been decrypting you can't have been decrypting they can't have been decrypting
Interrogative form
Simple form
can I decrypt? can you decrypt? can she decrypt? can we decrypt? can you decrypt? can they decrypt?
V-ing form
can I be decrypting? can you be decrypting? can she be decrypting? can we be decrypting? can you be decrypting? can they be decrypting?
Perfect
can I have decrypted? can you have decrypted? can she 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 she have been decrypting? can we have been decrypting? can you have been decrypting? can they have been decrypting?
Interro-negative form
Simple form
can't I decrypt? can't you decrypt? can't she decrypt? can't we decrypt? can't you decrypt? can't they decrypt?
V-ing form
can't I be decrypting? can't you be decrypting? can't she be decrypting? can't we be decrypting? can't you be decrypting? can't they be decrypting?
Perfect
can't I have decrypted? can't you have decrypted? can't she have decrypted? can't we have decrypted? can't you have decrypted? can't they have decrypted?
V-ing perfect
can't I have been decrypting? can't you have been decrypting? can't she have been decrypting? can't we have been decrypting? can't you have been decrypting? can't they have been decrypting?