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 couldn't disappoint you couldn't disappoint he couldn't disappoint we couldn't disappoint you couldn't disappoint they couldn't disappoint	I couldn't be disappointing you couldn't be disappointing he couldn't be disappointing we couldn't be disappointing you couldn't be disappointing they couldn't be disappointing
Perfect	V-ing perfect
I couldn't have disappointed you couldn't have disappointed he couldn't have disappointed we couldn't have disappointed you couldn't have disappointed they couldn't have disappointed	I couldn't have been disappointing you couldn't have been disappointing he couldn't have been disappointing we couldn't have been disappointing you couldn't have been disappointing they couldn't 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
couldn't I disappoint? couldn't you disappoint? couldn't he disappoint? couldn't we disappoint? couldn't you disappoint? couldn't they disappoint?	couldn't I be disappointing? couldn't you be disappointing? couldn't he be disappointing? couldn't we be disappointing? couldn't you be disappointing? couldn't they be disappointing?
Perfect	V-ing perfect
couldn't I have disappointed? couldn't you have disappointed? couldn't he have disappointed? couldn't we have disappointed? couldn't you have disappointed? couldn't they have disappointed?	couldn't I have been disappointing? couldn't you have been disappointing? couldn't he have been disappointing? couldn't we have been disappointing? couldn't you have been disappointing? couldn't they have been disappointing?