I could decriminalize you could decriminalize he could decriminalize we could decriminalize you could decriminalize they could decriminalize
V-ing form
I could be decriminalizing you could be decriminalizing he could be decriminalizing we could be decriminalizing you could be decriminalizing they could be decriminalizing
Perfect
I could have decriminalized you could have decriminalized he could have decriminalized we could have decriminalized you could have decriminalized they could have decriminalized
V-ing perfect
I could have been decriminalizing you could have been decriminalizing he could have been decriminalizing we could have been decriminalizing you could have been decriminalizing they could have been decriminalizing
Negation
Simple form
I could not decriminalize you could not decriminalize he could not decriminalize we could not decriminalize you could not decriminalize they could not decriminalize
V-ing form
I could not be decriminalizing you could not be decriminalizing he could not be decriminalizing we could not be decriminalizing you could not be decriminalizing they could not be decriminalizing
Perfect
I could not have decriminalized you could not have decriminalized he could not have decriminalized we could not have decriminalized you could not have decriminalized they could not have decriminalized
V-ing perfect
I could not have been decriminalizing you could not have been decriminalizing he could not have been decriminalizing we could not have been decriminalizing you could not have been decriminalizing they could not have been decriminalizing
Interrogative form
Simple form
could I decriminalize? could you decriminalize? could he decriminalize? could we decriminalize? could you decriminalize? could they decriminalize?
V-ing form
could I be decriminalizing? could you be decriminalizing? could he be decriminalizing? could we be decriminalizing? could you be decriminalizing? could they be decriminalizing?
Perfect
could I have decriminalized? could you have decriminalized? could he have decriminalized? could we have decriminalized? could you have decriminalized? could they have decriminalized?
V-ing perfect
could I have been decriminalizing? could you have been decriminalizing? could he have been decriminalizing? could we have been decriminalizing? could you have been decriminalizing? could they have been decriminalizing?
Interro-negative form
Simple form
could I not decriminalize? could you not decriminalize? could he not decriminalize? could we not decriminalize? could you not decriminalize? could they not decriminalize?
V-ing form
could I not be decriminalizing? could you not be decriminalizing? could he not be decriminalizing? could we not be decriminalizing? could you not be decriminalizing? could they not be decriminalizing?
Perfect
could I not have decriminalized? could you not have decriminalized? could he not have decriminalized? could we not have decriminalized? could you not have decriminalized? could they not have decriminalized?
V-ing perfect
could I not have been decriminalizing? could you not have been decriminalizing? could he not have been decriminalizing? could we not have been decriminalizing? could you not have been decriminalizing? could they not have been decriminalizing?