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 couldn't ting you couldn't ting he couldn't ting we couldn't ting you couldn't ting they couldn't ting	I couldn't be tinging you couldn't be tinging he couldn't be tinging we couldn't be tinging you couldn't be tinging they couldn't be tinging
Perfect	V-ing perfect
I couldn't have tinged you couldn't have tinged he couldn't have tinged we couldn't have tinged you couldn't have tinged they couldn't have tinged	I couldn't have been tinging you couldn't have been tinging he couldn't have been tinging we couldn't have been tinging you couldn't have been tinging they couldn't 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
couldn't I ting? couldn't you ting? couldn't he ting? couldn't we ting? couldn't you ting? couldn't they ting?	couldn't I be tinging? couldn't you be tinging? couldn't he be tinging? couldn't we be tinging? couldn't you be tinging? couldn't they be tinging?
Perfect	V-ing perfect
couldn't I have tinged? couldn't you have tinged? couldn't he have tinged? couldn't we have tinged? couldn't you have tinged? couldn't they have tinged?	couldn't I have been tinging? couldn't you have been tinging? couldn't he have been tinging? couldn't we have been tinging? couldn't you have been tinging? couldn't they have been tinging?