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 can't helve you can't helve he can't helve we can't helve you can't helve they can't helve	I can't be helving you can't be helving he can't be helving we can't be helving you can't be helving they can't be helving
Perfect	V-ing perfect
I can't have helved you can't have helved he can't have helved we can't have helved you can't have helved they can't have helved	I can't have been helving you can't have been helving he can't have been helving we can't have been helving you can't have been helving they can't 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't I helve? can't you helve? can't he helve? can't we helve? can't you helve? can't they helve?	can't I be helving? can't you be helving? can't he be helving? can't we be helving? can't you be helving? can't they be helving?
Perfect	V-ing perfect
can't I have helved? can't you have helved? can't he have helved? can't we have helved? can't you have helved? can't they have helved?	can't I have been helving? can't you have been helving? can't he have been helving? can't we have been helving? can't you have been helving? can't they have been helving?