English verb conjugation
COULD TWANG

Regular verb: twang - twanged - twanged

Affirmation

Simple form	V-ing form
I could twang you could twang he could twang we could twang you could twang they could twang	I could be twanging you could be twanging he could be twanging we could be twanging you could be twanging they could be twanging
Perfect	V-ing perfect
I could have twanged you could have twanged he could have twanged we could have twanged you could have twanged they could have twanged	I could have been twanging you could have been twanging he could have been twanging we could have been twanging you could have been twanging they could have been twanging

Negation

Simple form	V-ing form
I couldn't twang you couldn't twang he couldn't twang we couldn't twang you couldn't twang they couldn't twang	I couldn't be twanging you couldn't be twanging he couldn't be twanging we couldn't be twanging you couldn't be twanging they couldn't be twanging
Perfect	V-ing perfect
I couldn't have twanged you couldn't have twanged he couldn't have twanged we couldn't have twanged you couldn't have twanged they couldn't have twanged	I couldn't have been twanging you couldn't have been twanging he couldn't have been twanging we couldn't have been twanging you couldn't have been twanging they couldn't have been twanging

Interrogative form

Simple form	V-ing form
could I twang? could you twang? could he twang? could we twang? could you twang? could they twang?	could I be twanging? could you be twanging? could he be twanging? could we be twanging? could you be twanging? could they be twanging?
Perfect	V-ing perfect
could I have twanged? could you have twanged? could he have twanged? could we have twanged? could you have twanged? could they have twanged?	could I have been twanging? could you have been twanging? could he have been twanging? could we have been twanging? could you have been twanging? could they have been twanging?

Interro-negative form

Simple form	V-ing form
couldn't I twang? couldn't you twang? couldn't he twang? couldn't we twang? couldn't you twang? couldn't they twang?	couldn't I be twanging? couldn't you be twanging? couldn't he be twanging? couldn't we be twanging? couldn't you be twanging? couldn't they be twanging?
Perfect	V-ing perfect
couldn't I have twanged? couldn't you have twanged? couldn't he have twanged? couldn't we have twanged? couldn't you have twanged? couldn't they have twanged?	couldn't I have been twanging? couldn't you have been twanging? couldn't he have been twanging? couldn't we have been twanging? couldn't you have been twanging? couldn't they have been twanging?