English verb conjugation
COULD HELVE

Regular verb: helve - helved - helved

Affirmation

Simple form	V-ing form
I could helve you could helve he could helve we could helve you could helve they could helve	I could be helving you could be helving he could be helving we could be helving you could be helving they could be helving
Perfect	V-ing perfect
I could have helved you could have helved he could have helved we could have helved you could have helved they could have helved	I could have been helving you could have been helving he could have been helving we could have been helving you could have been helving they could have been helving

Negation

Simple form	V-ing form
I could not helve you could not helve he could not helve we could not helve you could not helve they could not helve	I could not be helving you could not be helving he could not be helving we could not be helving you could not be helving they could not be helving
Perfect	V-ing perfect
I could not have helved you could not have helved he could not have helved we could not have helved you could not have helved they could not have helved	I could not have been helving you could not have been helving he could not have been helving we could not have been helving you could not have been helving they could not have been helving

Interrogative form

Simple form	V-ing form
could I helve? could you helve? could he helve? could we helve? could you helve? could they helve?	could I be helving? could you be helving? could he be helving? could we be helving? could you be helving? could they be helving?
Perfect	V-ing perfect
could I have helved? could you have helved? could he have helved? could we have helved? could you have helved? could they have helved?	could I have been helving? could you have been helving? could he have been helving? could we have been helving? could you have been helving? could they have been helving?

Interro-negative form

Simple form	V-ing form
could I not helve? could you not helve? could he not helve? could we not helve? could you not helve? could they not helve?	could I not be helving? could you not be helving? could he not be helving? could we not be helving? could you not be helving? could they not be helving?
Perfect	V-ing perfect
could I not have helved? could you not have helved? could he not have helved? could we not have helved? could you not have helved? could they not have helved?	could I not have been helving? could you not have been helving? could he not have been helving? could we not have been helving? could you not have been helving? could they not have been helving?