English verb conjugation
COULD GRANDSTAND

Regular verb: grandstand - grandstanded - grandstanded

Affirmation

Simple form	V-ing form
I could grandstand you could grandstand he could grandstand we could grandstand you could grandstand they could grandstand	I could be grandstanding you could be grandstanding he could be grandstanding we could be grandstanding you could be grandstanding they could be grandstanding
Perfect	V-ing perfect
I could have grandstanded you could have grandstanded he could have grandstanded we could have grandstanded you could have grandstanded they could have grandstanded	I could have been grandstanding you could have been grandstanding he could have been grandstanding we could have been grandstanding you could have been grandstanding they could have been grandstanding

Negation

Simple form	V-ing form
I couldn't grandstand you couldn't grandstand he couldn't grandstand we couldn't grandstand you couldn't grandstand they couldn't grandstand	I couldn't be grandstanding you couldn't be grandstanding he couldn't be grandstanding we couldn't be grandstanding you couldn't be grandstanding they couldn't be grandstanding
Perfect	V-ing perfect
I couldn't have grandstanded you couldn't have grandstanded he couldn't have grandstanded we couldn't have grandstanded you couldn't have grandstanded they couldn't have grandstanded	I couldn't have been grandstanding you couldn't have been grandstanding he couldn't have been grandstanding we couldn't have been grandstanding you couldn't have been grandstanding they couldn't have been grandstanding

Interrogative form

Simple form	V-ing form
could I grandstand? could you grandstand? could he grandstand? could we grandstand? could you grandstand? could they grandstand?	could I be grandstanding? could you be grandstanding? could he be grandstanding? could we be grandstanding? could you be grandstanding? could they be grandstanding?
Perfect	V-ing perfect
could I have grandstanded? could you have grandstanded? could he have grandstanded? could we have grandstanded? could you have grandstanded? could they have grandstanded?	could I have been grandstanding? could you have been grandstanding? could he have been grandstanding? could we have been grandstanding? could you have been grandstanding? could they have been grandstanding?

Interro-negative form

Simple form	V-ing form
couldn't I grandstand? couldn't you grandstand? couldn't he grandstand? couldn't we grandstand? couldn't you grandstand? couldn't they grandstand?	couldn't I be grandstanding? couldn't you be grandstanding? couldn't he be grandstanding? couldn't we be grandstanding? couldn't you be grandstanding? couldn't they be grandstanding?
Perfect	V-ing perfect
couldn't I have grandstanded? couldn't you have grandstanded? couldn't he have grandstanded? couldn't we have grandstanded? couldn't you have grandstanded? couldn't they have grandstanded?	couldn't I have been grandstanding? couldn't you have been grandstanding? couldn't he have been grandstanding? couldn't we have been grandstanding? couldn't you have been grandstanding? couldn't they have been grandstanding?