English verb conjugation
COULD BLACKMARKET

Regular verb: blackmarket - blackmarketed - blackmarketed

Affirmation

Simple form	V-ing form
I could blackmarket you could blackmarket she could blackmarket we could blackmarket you could blackmarket they could blackmarket	I could be blackmarketing you could be blackmarketing she could be blackmarketing we could be blackmarketing you could be blackmarketing they could be blackmarketing
Perfect	V-ing perfect
I could have blackmarketed you could have blackmarketed she could have blackmarketed we could have blackmarketed you could have blackmarketed they could have blackmarketed	I could have been blackmarketing you could have been blackmarketing she could have been blackmarketing we could have been blackmarketing you could have been blackmarketing they could have been blackmarketing

Negation

Simple form	V-ing form
I couldn't blackmarket you couldn't blackmarket she couldn't blackmarket we couldn't blackmarket you couldn't blackmarket they couldn't blackmarket	I couldn't be blackmarketing you couldn't be blackmarketing she couldn't be blackmarketing we couldn't be blackmarketing you couldn't be blackmarketing they couldn't be blackmarketing
Perfect	V-ing perfect
I couldn't have blackmarketed you couldn't have blackmarketed she couldn't have blackmarketed we couldn't have blackmarketed you couldn't have blackmarketed they couldn't have blackmarketed	I couldn't have been blackmarketing you couldn't have been blackmarketing she couldn't have been blackmarketing we couldn't have been blackmarketing you couldn't have been blackmarketing they couldn't have been blackmarketing

Interrogative form

Simple form	V-ing form
could I blackmarket? could you blackmarket? could she blackmarket? could we blackmarket? could you blackmarket? could they blackmarket?	could I be blackmarketing? could you be blackmarketing? could she be blackmarketing? could we be blackmarketing? could you be blackmarketing? could they be blackmarketing?
Perfect	V-ing perfect
could I have blackmarketed? could you have blackmarketed? could she have blackmarketed? could we have blackmarketed? could you have blackmarketed? could they have blackmarketed?	could I have been blackmarketing? could you have been blackmarketing? could she have been blackmarketing? could we have been blackmarketing? could you have been blackmarketing? could they have been blackmarketing?

Interro-negative form

Simple form	V-ing form
couldn't I blackmarket? couldn't you blackmarket? couldn't she blackmarket? couldn't we blackmarket? couldn't you blackmarket? couldn't they blackmarket?	couldn't I be blackmarketing? couldn't you be blackmarketing? couldn't she be blackmarketing? couldn't we be blackmarketing? couldn't you be blackmarketing? couldn't they be blackmarketing?
Perfect	V-ing perfect
couldn't I have blackmarketed? couldn't you have blackmarketed? couldn't she have blackmarketed? couldn't we have blackmarketed? couldn't you have blackmarketed? couldn't they have blackmarketed?	couldn't I have been blackmarketing? couldn't you have been blackmarketing? couldn't she have been blackmarketing? couldn't we have been blackmarketing? couldn't you have been blackmarketing? couldn't they have been blackmarketing?