I could engarland you could engarland he could engarland we could engarland you could engarland they could engarland
V-ing form
I could be engarlanding you could be engarlanding he could be engarlanding we could be engarlanding you could be engarlanding they could be engarlanding
Perfect
I could have engarlanded you could have engarlanded he could have engarlanded we could have engarlanded you could have engarlanded they could have engarlanded
V-ing perfect
I could have been engarlanding you could have been engarlanding he could have been engarlanding we could have been engarlanding you could have been engarlanding they could have been engarlanding
Negation
Simple form
I could not engarland you could not engarland he could not engarland we could not engarland you could not engarland they could not engarland
V-ing form
I could not be engarlanding you could not be engarlanding he could not be engarlanding we could not be engarlanding you could not be engarlanding they could not be engarlanding
Perfect
I could not have engarlanded you could not have engarlanded he could not have engarlanded we could not have engarlanded you could not have engarlanded they could not have engarlanded
V-ing perfect
I could not have been engarlanding you could not have been engarlanding he could not have been engarlanding we could not have been engarlanding you could not have been engarlanding they could not have been engarlanding
Interrogative form
Simple form
could I engarland? could you engarland? could he engarland? could we engarland? could you engarland? could they engarland?
V-ing form
could I be engarlanding? could you be engarlanding? could he be engarlanding? could we be engarlanding? could you be engarlanding? could they be engarlanding?
Perfect
could I have engarlanded? could you have engarlanded? could he have engarlanded? could we have engarlanded? could you have engarlanded? could they have engarlanded?
V-ing perfect
could I have been engarlanding? could you have been engarlanding? could he have been engarlanding? could we have been engarlanding? could you have been engarlanding? could they have been engarlanding?
Interro-negative form
Simple form
could I not engarland? could you not engarland? could he not engarland? could we not engarland? could you not engarland? could they not engarland?
V-ing form
could I not be engarlanding? could you not be engarlanding? could he not be engarlanding? could we not be engarlanding? could you not be engarlanding? could they not be engarlanding?
Perfect
could I not have engarlanded? could you not have engarlanded? could he not have engarlanded? could we not have engarlanded? could you not have engarlanded? could they not have engarlanded?
V-ing perfect
could I not have been engarlanding? could you not have been engarlanding? could he not have been engarlanding? could we not have been engarlanding? could you not have been engarlanding? could they not have been engarlanding?