English verb conjugation
COULD DISCONTINUE

Regular verb: discontinue - discontinued - discontinued

Affirmation

Simple form	V-ing form
I could discontinue you could discontinue he could discontinue we could discontinue you could discontinue they could discontinue	I could be discontinuing you could be discontinuing he 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 he 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 he 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 he 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 he 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 he 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 he 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 he discontinue? could we discontinue? could you discontinue? could they discontinue?	could I be discontinuing? could you be discontinuing? could he 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 he 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 he 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 he 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 he 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 he 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 he have been discontinuing? couldn't we have been discontinuing? couldn't you have been discontinuing? couldn't they have been discontinuing?