I could merchandise you could merchandise she could merchandise we could merchandise you could merchandise they could merchandise
V-ing form
I could be merchandising you could be merchandising she could be merchandising we could be merchandising you could be merchandising they could be merchandising
Perfect
I could have merchandised you could have merchandised she could have merchandised we could have merchandised you could have merchandised they could have merchandised
V-ing perfect
I could have been merchandising you could have been merchandising she could have been merchandising we could have been merchandising you could have been merchandising they could have been merchandising
Negation
Simple form
I could not merchandise you could not merchandise she could not merchandise we could not merchandise you could not merchandise they could not merchandise
V-ing form
I could not be merchandising you could not be merchandising she could not be merchandising we could not be merchandising you could not be merchandising they could not be merchandising
Perfect
I could not have merchandised you could not have merchandised she could not have merchandised we could not have merchandised you could not have merchandised they could not have merchandised
V-ing perfect
I could not have been merchandising you could not have been merchandising she could not have been merchandising we could not have been merchandising you could not have been merchandising they could not have been merchandising
Interrogative form
Simple form
could I merchandise? could you merchandise? could she merchandise? could we merchandise? could you merchandise? could they merchandise?
V-ing form
could I be merchandising? could you be merchandising? could she be merchandising? could we be merchandising? could you be merchandising? could they be merchandising?
Perfect
could I have merchandised? could you have merchandised? could she have merchandised? could we have merchandised? could you have merchandised? could they have merchandised?
V-ing perfect
could I have been merchandising? could you have been merchandising? could she have been merchandising? could we have been merchandising? could you have been merchandising? could they have been merchandising?
Interro-negative form
Simple form
could I not merchandise? could you not merchandise? could she not merchandise? could we not merchandise? could you not merchandise? could they not merchandise?
V-ing form
could I not be merchandising? could you not be merchandising? could she not be merchandising? could we not be merchandising? could you not be merchandising? could they not be merchandising?
Perfect
could I not have merchandised? could you not have merchandised? could she not have merchandised? could we not have merchandised? could you not have merchandised? could they not have merchandised?
V-ing perfect
could I not have been merchandising? could you not have been merchandising? could she not have been merchandising? could we not have been merchandising? could you not have been merchandising? could they not have been merchandising?