English verb conjugation
COULD ZING

Regular verb: zing - zinged - zinged

Affirmation

Simple form	V-ing form
I could zing you could zing he could zing we could zing you could zing they could zing	I could be zinging you could be zinging he could be zinging we could be zinging you could be zinging they could be zinging
Perfect	V-ing perfect
I could have zinged you could have zinged he could have zinged we could have zinged you could have zinged they could have zinged	I could have been zinging you could have been zinging he could have been zinging we could have been zinging you could have been zinging they could have been zinging

Negation

Simple form	V-ing form
I couldn't zing you couldn't zing he couldn't zing we couldn't zing you couldn't zing they couldn't zing	I couldn't be zinging you couldn't be zinging he couldn't be zinging we couldn't be zinging you couldn't be zinging they couldn't be zinging
Perfect	V-ing perfect
I couldn't have zinged you couldn't have zinged he couldn't have zinged we couldn't have zinged you couldn't have zinged they couldn't have zinged	I couldn't have been zinging you couldn't have been zinging he couldn't have been zinging we couldn't have been zinging you couldn't have been zinging they couldn't have been zinging

Interrogative form

Simple form	V-ing form
could I zing? could you zing? could he zing? could we zing? could you zing? could they zing?	could I be zinging? could you be zinging? could he be zinging? could we be zinging? could you be zinging? could they be zinging?
Perfect	V-ing perfect
could I have zinged? could you have zinged? could he have zinged? could we have zinged? could you have zinged? could they have zinged?	could I have been zinging? could you have been zinging? could he have been zinging? could we have been zinging? could you have been zinging? could they have been zinging?

Interro-negative form

Simple form	V-ing form
couldn't I zing? couldn't you zing? couldn't he zing? couldn't we zing? couldn't you zing? couldn't they zing?	couldn't I be zinging? couldn't you be zinging? couldn't he be zinging? couldn't we be zinging? couldn't you be zinging? couldn't they be zinging?
Perfect	V-ing perfect
couldn't I have zinged? couldn't you have zinged? couldn't he have zinged? couldn't we have zinged? couldn't you have zinged? couldn't they have zinged?	couldn't I have been zinging? couldn't you have been zinging? couldn't he have been zinging? couldn't we have been zinging? couldn't you have been zinging? couldn't they have been zinging?