English verb conjugation
COULD DING

Regular verb: ding - dinged - dinged

Affirmation

Simple form	V-ing form
I could ding you could ding he could ding we could ding you could ding they could ding	I could be dinging you could be dinging he could be dinging we could be dinging you could be dinging they could be dinging
Perfect	V-ing perfect
I could have dinged you could have dinged he could have dinged we could have dinged you could have dinged they could have dinged	I could have been dinging you could have been dinging he could have been dinging we could have been dinging you could have been dinging they could have been dinging

Negation

Simple form	V-ing form
I couldn't ding you couldn't ding he couldn't ding we couldn't ding you couldn't ding they couldn't ding	I couldn't be dinging you couldn't be dinging he couldn't be dinging we couldn't be dinging you couldn't be dinging they couldn't be dinging
Perfect	V-ing perfect
I couldn't have dinged you couldn't have dinged he couldn't have dinged we couldn't have dinged you couldn't have dinged they couldn't have dinged	I couldn't have been dinging you couldn't have been dinging he couldn't have been dinging we couldn't have been dinging you couldn't have been dinging they couldn't have been dinging

Interrogative form

Simple form	V-ing form
could I ding? could you ding? could he ding? could we ding? could you ding? could they ding?	could I be dinging? could you be dinging? could he be dinging? could we be dinging? could you be dinging? could they be dinging?
Perfect	V-ing perfect
could I have dinged? could you have dinged? could he have dinged? could we have dinged? could you have dinged? could they have dinged?	could I have been dinging? could you have been dinging? could he have been dinging? could we have been dinging? could you have been dinging? could they have been dinging?

Interro-negative form

Simple form	V-ing form
couldn't I ding? couldn't you ding? couldn't he ding? couldn't we ding? couldn't you ding? couldn't they ding?	couldn't I be dinging? couldn't you be dinging? couldn't he be dinging? couldn't we be dinging? couldn't you be dinging? couldn't they be dinging?
Perfect	V-ing perfect
couldn't I have dinged? couldn't you have dinged? couldn't he have dinged? couldn't we have dinged? couldn't you have dinged? couldn't they have dinged?	couldn't I have been dinging? couldn't you have been dinging? couldn't he have been dinging? couldn't we have been dinging? couldn't you have been dinging? couldn't they have been dinging?