Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could dechiper you could dechiper he could dechiper we could dechiper you could dechiper they could dechiper
V-ing form
I could be dechipering you could be dechipering he could be dechipering we could be dechipering you could be dechipering they could be dechipering
Perfect
I could have dechipered you could have dechipered he could have dechipered we could have dechipered you could have dechipered they could have dechipered
V-ing perfect
I could have been dechipering you could have been dechipering he could have been dechipering we could have been dechipering you could have been dechipering they could have been dechipering
Negation
Simple form
I could not dechiper you could not dechiper he could not dechiper we could not dechiper you could not dechiper they could not dechiper
V-ing form
I could not be dechipering you could not be dechipering he could not be dechipering we could not be dechipering you could not be dechipering they could not be dechipering
Perfect
I could not have dechipered you could not have dechipered he could not have dechipered we could not have dechipered you could not have dechipered they could not have dechipered
V-ing perfect
I could not have been dechipering you could not have been dechipering he could not have been dechipering we could not have been dechipering you could not have been dechipering they could not have been dechipering
Interrogative form
Simple form
could I dechiper? could you dechiper? could he dechiper? could we dechiper? could you dechiper? could they dechiper?
V-ing form
could I be dechipering? could you be dechipering? could he be dechipering? could we be dechipering? could you be dechipering? could they be dechipering?
Perfect
could I have dechipered? could you have dechipered? could he have dechipered? could we have dechipered? could you have dechipered? could they have dechipered?
V-ing perfect
could I have been dechipering? could you have been dechipering? could he have been dechipering? could we have been dechipering? could you have been dechipering? could they have been dechipering?
Interro-negative form
Simple form
could I not dechiper? could you not dechiper? could he not dechiper? could we not dechiper? could you not dechiper? could they not dechiper?
V-ing form
could I not be dechipering? could you not be dechipering? could he not be dechipering? could we not be dechipering? could you not be dechipering? could they not be dechipering?
Perfect
could I not have dechipered? could you not have dechipered? could he not have dechipered? could we not have dechipered? could you not have dechipered? could they not have dechipered?
V-ing perfect
could I not have been dechipering? could you not have been dechipering? could he not have been dechipering? could we not have been dechipering? could you not have been dechipering? could they not have been dechipering?