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