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