English verb conjugation
COULD DISCONTINUE

Regular verb: discontinue - discontinued - discontinued

Affirmation

Simple form	V-ing form
I could discontinue you could discontinue she could discontinue we could discontinue you could discontinue they could discontinue	I could be discontinuing you could be discontinuing she could be discontinuing we could be discontinuing you could be discontinuing they could be discontinuing
Perfect	V-ing perfect
I could have discontinued you could have discontinued she could have discontinued we could have discontinued you could have discontinued they could have discontinued	I could have been discontinuing you could have been discontinuing she could have been discontinuing we could have been discontinuing you could have been discontinuing they could have been discontinuing

Negation

Simple form	V-ing form
I couldn't discontinue you couldn't discontinue she couldn't discontinue we couldn't discontinue you couldn't discontinue they couldn't discontinue	I couldn't be discontinuing you couldn't be discontinuing she couldn't be discontinuing we couldn't be discontinuing you couldn't be discontinuing they couldn't be discontinuing
Perfect	V-ing perfect
I couldn't have discontinued you couldn't have discontinued she couldn't have discontinued we couldn't have discontinued you couldn't have discontinued they couldn't have discontinued	I couldn't have been discontinuing you couldn't have been discontinuing she couldn't have been discontinuing we couldn't have been discontinuing you couldn't have been discontinuing they couldn't have been discontinuing

Interrogative form

Simple form	V-ing form
could I discontinue? could you discontinue? could she discontinue? could we discontinue? could you discontinue? could they discontinue?	could I be discontinuing? could you be discontinuing? could she be discontinuing? could we be discontinuing? could you be discontinuing? could they be discontinuing?
Perfect	V-ing perfect
could I have discontinued? could you have discontinued? could she have discontinued? could we have discontinued? could you have discontinued? could they have discontinued?	could I have been discontinuing? could you have been discontinuing? could she have been discontinuing? could we have been discontinuing? could you have been discontinuing? could they have been discontinuing?

Interro-negative form

Simple form	V-ing form
couldn't I discontinue? couldn't you discontinue? couldn't she discontinue? couldn't we discontinue? couldn't you discontinue? couldn't they discontinue?	couldn't I be discontinuing? couldn't you be discontinuing? couldn't she be discontinuing? couldn't we be discontinuing? couldn't you be discontinuing? couldn't they be discontinuing?
Perfect	V-ing perfect
couldn't I have discontinued? couldn't you have discontinued? couldn't she have discontinued? couldn't we have discontinued? couldn't you have discontinued? couldn't they have discontinued?	couldn't I have been discontinuing? couldn't you have been discontinuing? couldn't she have been discontinuing? couldn't we have been discontinuing? couldn't you have been discontinuing? couldn't they have been discontinuing?