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