I could decriminalize you could decriminalize she could decriminalize we could decriminalize you could decriminalize they could decriminalize
V-ing form
I could be decriminalizing you could be decriminalizing she could be decriminalizing we could be decriminalizing you could be decriminalizing they could be decriminalizing
Perfect
I could have decriminalized you could have decriminalized she 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 she could have been decriminalizing we could have been decriminalizing you could have been decriminalizing they could have been decriminalizing
Negation
Simple form
I couldn't decriminalize you couldn't decriminalize she couldn't decriminalize we couldn't decriminalize you couldn't decriminalize they couldn't decriminalize
V-ing form
I couldn't be decriminalizing you couldn't be decriminalizing she couldn't be decriminalizing we couldn't be decriminalizing you couldn't be decriminalizing they couldn't be decriminalizing
Perfect
I couldn't have decriminalized you couldn't have decriminalized she couldn't have decriminalized we couldn't have decriminalized you couldn't have decriminalized they couldn't have decriminalized
V-ing perfect
I couldn't have been decriminalizing you couldn't have been decriminalizing she couldn't have been decriminalizing we couldn't have been decriminalizing you couldn't have been decriminalizing they couldn't have been decriminalizing
Interrogative form
Simple form
could I decriminalize? could you decriminalize? could she decriminalize? could we decriminalize? could you decriminalize? could they decriminalize?
V-ing form
could I be decriminalizing? could you be decriminalizing? could she be decriminalizing? could we be decriminalizing? could you be decriminalizing? could they be decriminalizing?
Perfect
could I have decriminalized? could you have decriminalized? could she 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 she have been decriminalizing? could we have been decriminalizing? could you have been decriminalizing? could they have been decriminalizing?
Interro-negative form
Simple form
couldn't I decriminalize? couldn't you decriminalize? couldn't she decriminalize? couldn't we decriminalize? couldn't you decriminalize? couldn't they decriminalize?
V-ing form
couldn't I be decriminalizing? couldn't you be decriminalizing? couldn't she be decriminalizing? couldn't we be decriminalizing? couldn't you be decriminalizing? couldn't they be decriminalizing?
Perfect
couldn't I have decriminalized? couldn't you have decriminalized? couldn't she have decriminalized? couldn't we have decriminalized? couldn't you have decriminalized? couldn't they have decriminalized?
V-ing perfect
couldn't I have been decriminalizing? couldn't you have been decriminalizing? couldn't she have been decriminalizing? couldn't we have been decriminalizing? couldn't you have been decriminalizing? couldn't they have been decriminalizing?