English verb conjugation
CAN HELVE

Regular verb: helve - helved - helved

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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