I could lacquer you could lacquer he could lacquer we could lacquer you could lacquer they could lacquer
V-ing form
I could be lacquering you could be lacquering he could be lacquering we could be lacquering you could be lacquering they could be lacquering
Perfect
I could have lacquered you could have lacquered he could have lacquered we could have lacquered you could have lacquered they could have lacquered
V-ing perfect
I could have been lacquering you could have been lacquering he could have been lacquering we could have been lacquering you could have been lacquering they could have been lacquering
Negation
Simple form
I couldn't lacquer you couldn't lacquer he couldn't lacquer we couldn't lacquer you couldn't lacquer they couldn't lacquer
V-ing form
I couldn't be lacquering you couldn't be lacquering he couldn't be lacquering we couldn't be lacquering you couldn't be lacquering they couldn't be lacquering
Perfect
I couldn't have lacquered you couldn't have lacquered he couldn't have lacquered we couldn't have lacquered you couldn't have lacquered they couldn't have lacquered
V-ing perfect
I couldn't have been lacquering you couldn't have been lacquering he couldn't have been lacquering we couldn't have been lacquering you couldn't have been lacquering they couldn't have been lacquering
Interrogative form
Simple form
could I lacquer? could you lacquer? could he lacquer? could we lacquer? could you lacquer? could they lacquer?
V-ing form
could I be lacquering? could you be lacquering? could he be lacquering? could we be lacquering? could you be lacquering? could they be lacquering?
Perfect
could I have lacquered? could you have lacquered? could he have lacquered? could we have lacquered? could you have lacquered? could they have lacquered?
V-ing perfect
could I have been lacquering? could you have been lacquering? could he have been lacquering? could we have been lacquering? could you have been lacquering? could they have been lacquering?
Interro-negative form
Simple form
couldn't I lacquer? couldn't you lacquer? couldn't he lacquer? couldn't we lacquer? couldn't you lacquer? couldn't they lacquer?
V-ing form
couldn't I be lacquering? couldn't you be lacquering? couldn't he be lacquering? couldn't we be lacquering? couldn't you be lacquering? couldn't they be lacquering?
Perfect
couldn't I have lacquered? couldn't you have lacquered? couldn't he have lacquered? couldn't we have lacquered? couldn't you have lacquered? couldn't they have lacquered?
V-ing perfect
couldn't I have been lacquering? couldn't you have been lacquering? couldn't he have been lacquering? couldn't we have been lacquering? couldn't you have been lacquering? couldn't they have been lacquering?