English verb conjugation
COULD DISAPPOINT

Regular verb: disappoint - disappointed - disappointed

Affirmation

Simple form	V-ing form
I could disappoint you could disappoint he could disappoint we could disappoint you could disappoint they could disappoint	I could be disappointing you could be disappointing he could be disappointing we could be disappointing you could be disappointing they could be disappointing
Perfect	V-ing perfect
I could have disappointed you could have disappointed he could have disappointed we could have disappointed you could have disappointed they could have disappointed	I could have been disappointing you could have been disappointing he could have been disappointing we could have been disappointing you could have been disappointing they could have been disappointing

Negation

Simple form	V-ing form
I could not disappoint you could not disappoint he could not disappoint we could not disappoint you could not disappoint they could not disappoint	I could not be disappointing you could not be disappointing he could not be disappointing we could not be disappointing you could not be disappointing they could not be disappointing
Perfect	V-ing perfect
I could not have disappointed you could not have disappointed he could not have disappointed we could not have disappointed you could not have disappointed they could not have disappointed	I could not have been disappointing you could not have been disappointing he could not have been disappointing we could not have been disappointing you could not have been disappointing they could not have been disappointing

Interrogative form

Simple form	V-ing form
could I disappoint? could you disappoint? could he disappoint? could we disappoint? could you disappoint? could they disappoint?	could I be disappointing? could you be disappointing? could he be disappointing? could we be disappointing? could you be disappointing? could they be disappointing?
Perfect	V-ing perfect
could I have disappointed? could you have disappointed? could he have disappointed? could we have disappointed? could you have disappointed? could they have disappointed?	could I have been disappointing? could you have been disappointing? could he have been disappointing? could we have been disappointing? could you have been disappointing? could they have been disappointing?

Interro-negative form

Simple form	V-ing form
could I not disappoint? could you not disappoint? could he not disappoint? could we not disappoint? could you not disappoint? could they not disappoint?	could I not be disappointing? could you not be disappointing? could he not be disappointing? could we not be disappointing? could you not be disappointing? could they not be disappointing?
Perfect	V-ing perfect
could I not have disappointed? could you not have disappointed? could he not have disappointed? could we not have disappointed? could you not have disappointed? could they not have disappointed?	could I not have been disappointing? could you not have been disappointing? could he not have been disappointing? could we not have been disappointing? could you not have been disappointing? could they not have been disappointing?