English verb conjugation
COULD TING

Regular verb: ting - tinged - tinged

Affirmation

Simple form	V-ing form
I could ting you could ting he could ting we could ting you could ting they could ting	I could be tinging you could be tinging he could be tinging we could be tinging you could be tinging they could be tinging
Perfect	V-ing perfect
I could have tinged you could have tinged he could have tinged we could have tinged you could have tinged they could have tinged	I could have been tinging you could have been tinging he could have been tinging we could have been tinging you could have been tinging they could have been tinging

Negation

Simple form	V-ing form
I could not ting you could not ting he could not ting we could not ting you could not ting they could not ting	I could not be tinging you could not be tinging he could not be tinging we could not be tinging you could not be tinging they could not be tinging
Perfect	V-ing perfect
I could not have tinged you could not have tinged he could not have tinged we could not have tinged you could not have tinged they could not have tinged	I could not have been tinging you could not have been tinging he could not have been tinging we could not have been tinging you could not have been tinging they could not have been tinging

Interrogative form

Simple form	V-ing form
could I ting? could you ting? could he ting? could we ting? could you ting? could they ting?	could I be tinging? could you be tinging? could he be tinging? could we be tinging? could you be tinging? could they be tinging?
Perfect	V-ing perfect
could I have tinged? could you have tinged? could he have tinged? could we have tinged? could you have tinged? could they have tinged?	could I have been tinging? could you have been tinging? could he have been tinging? could we have been tinging? could you have been tinging? could they have been tinging?

Interro-negative form

Simple form	V-ing form
could I not ting? could you not ting? could he not ting? could we not ting? could you not ting? could they not ting?	could I not be tinging? could you not be tinging? could he not be tinging? could we not be tinging? could you not be tinging? could they not be tinging?
Perfect	V-ing perfect
could I not have tinged? could you not have tinged? could he not have tinged? could we not have tinged? could you not have tinged? could they not have tinged?	could I not have been tinging? could you not have been tinging? could he not have been tinging? could we not have been tinging? could you not have been tinging? could they not have been tinging?