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 couldn't engarland you couldn't engarland he couldn't engarland we couldn't engarland you couldn't engarland they couldn't engarland
V-ing form
I couldn't be engarlanding you couldn't be engarlanding he couldn't be engarlanding we couldn't be engarlanding you couldn't be engarlanding they couldn't be engarlanding
Perfect
I couldn't have engarlanded you couldn't have engarlanded he couldn't have engarlanded we couldn't have engarlanded you couldn't have engarlanded they couldn't have engarlanded
V-ing perfect
I couldn't have been engarlanding you couldn't have been engarlanding he couldn't have been engarlanding we couldn't have been engarlanding you couldn't have been engarlanding they couldn't 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
couldn't I engarland? couldn't you engarland? couldn't he engarland? couldn't we engarland? couldn't you engarland? couldn't they engarland?
V-ing form
couldn't I be engarlanding? couldn't you be engarlanding? couldn't he be engarlanding? couldn't we be engarlanding? couldn't you be engarlanding? couldn't they be engarlanding?
Perfect
couldn't I have engarlanded? couldn't you have engarlanded? couldn't he have engarlanded? couldn't we have engarlanded? couldn't you have engarlanded? couldn't they have engarlanded?
V-ing perfect
couldn't I have been engarlanding? couldn't you have been engarlanding? couldn't he have been engarlanding? couldn't we have been engarlanding? couldn't you have been engarlanding? couldn't they have been engarlanding?