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 could not monger you could not monger he could not monger we could not monger you could not monger they could not monger
V-ing form
I could not be mongering you could not be mongering he could not be mongering we could not be mongering you could not be mongering they could not be mongering
Perfect
I could not have mongered you could not have mongered he could not have mongered we could not have mongered you could not have mongered they could not have mongered
V-ing perfect
I could not have been mongering you could not have been mongering he could not have been mongering we could not have been mongering you could not have been mongering they could not 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
could I not monger? could you not monger? could he not monger? could we not monger? could you not monger? could they not monger?
V-ing form
could I not be mongering? could you not be mongering? could he not be mongering? could we not be mongering? could you not be mongering? could they not be mongering?
Perfect
could I not have mongered? could you not have mongered? could he not have mongered? could we not have mongered? could you not have mongered? could they not have mongered?
V-ing perfect
could I not have been mongering? could you not have been mongering? could he not have been mongering? could we not have been mongering? could you not have been mongering? could they not have been mongering?