could decrypt
Regular verb: decrypt - decrypted- decrypted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could decrypt
you could decrypt
she could decrypt
we could decrypt
you could decrypt
they could decrypt 	I could be decrypting
you could be decrypting
she could be decrypting
we could be decrypting
you could be decrypting
they could be decrypting	I could have decrypted
you could have decrypted
she could have decrypted
we could have decrypted
you could have decrypted
they could have decrypted	I could have been decrypting
you could have been decrypting
she could have been decrypting
we could have been decrypting
you could have been decrypting
they could have been decrypting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't decrypt
you couldn't decrypt
she couldn't decrypt
we couldn't decrypt
you couldn't decrypt
they couldn't decrypt 	I couldn't be decrypting
you couldn't be decrypting
she couldn't be decrypting
we couldn't be decrypting
you couldn't be decrypting
they couldn't be decrypting	I couldn't have decrypted
you couldn't have decrypted
she couldn't have decrypted
we couldn't have decrypted
you couldn't have decrypted
they couldn't have decrypted	I couldn't have been decrypting
you couldn't have been decrypting
she couldn't have been decrypting
we couldn't have been decrypting
you couldn't have been decrypting
they couldn't have been decrypting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I decrypt?
could you decrypt?
could she decrypt?
could we decrypt?
could you decrypt?
could they decrypt? 	could I be decrypting?
could you be decrypting?
could she be decrypting?
could we be decrypting?
could you be decrypting?
could they be decrypting? 	could I have decrypted?
could you have decrypted?
could she have decrypted?
could we have decrypted?
could you have decrypted?
could they have decrypted? 	could I have been decrypting?
could you have been decrypting?
could she have been decrypting?
could we have been decrypting?
could you have been decrypting?
could they have been decrypting? 	

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