English verb conjugation
COULD OVERTAX

Regular verb: overtax - overtaxed - overtaxed

Affirmation

Simple form	V-ing form
I could overtax you could overtax he could overtax we could overtax you could overtax they could overtax	I could be overtaxing you could be overtaxing he could be overtaxing we could be overtaxing you could be overtaxing they could be overtaxing
Perfect	V-ing perfect
I could have overtaxed you could have overtaxed he could have overtaxed we could have overtaxed you could have overtaxed they could have overtaxed	I could have been overtaxing you could have been overtaxing he could have been overtaxing we could have been overtaxing you could have been overtaxing they could have been overtaxing

Negation

Simple form	V-ing form
I could not overtax you could not overtax he could not overtax we could not overtax you could not overtax they could not overtax	I could not be overtaxing you could not be overtaxing he could not be overtaxing we could not be overtaxing you could not be overtaxing they could not be overtaxing
Perfect	V-ing perfect
I could not have overtaxed you could not have overtaxed he could not have overtaxed we could not have overtaxed you could not have overtaxed they could not have overtaxed	I could not have been overtaxing you could not have been overtaxing he could not have been overtaxing we could not have been overtaxing you could not have been overtaxing they could not have been overtaxing

Interrogative form

Simple form	V-ing form
could I overtax? could you overtax? could he overtax? could we overtax? could you overtax? could they overtax?	could I be overtaxing? could you be overtaxing? could he be overtaxing? could we be overtaxing? could you be overtaxing? could they be overtaxing?
Perfect	V-ing perfect
could I have overtaxed? could you have overtaxed? could he have overtaxed? could we have overtaxed? could you have overtaxed? could they have overtaxed?	could I have been overtaxing? could you have been overtaxing? could he have been overtaxing? could we have been overtaxing? could you have been overtaxing? could they have been overtaxing?

Interro-negative form

Simple form	V-ing form
could I not overtax? could you not overtax? could he not overtax? could we not overtax? could you not overtax? could they not overtax?	could I not be overtaxing? could you not be overtaxing? could he not be overtaxing? could we not be overtaxing? could you not be overtaxing? could they not be overtaxing?
Perfect	V-ing perfect
could I not have overtaxed? could you not have overtaxed? could he not have overtaxed? could we not have overtaxed? could you not have overtaxed? could they not have overtaxed?	could I not have been overtaxing? could you not have been overtaxing? could he not have been overtaxing? could we not have been overtaxing? could you not have been overtaxing? could they not have been overtaxing?