English verb conjugation
CAN SHELVE

Regular verb: shelve - shelved - shelved

Affirmation

Simple form	V-ing form
I can shelve you can shelve he can shelve we can shelve you can shelve they can shelve	I can be shelving you can be shelving he can be shelving we can be shelving you can be shelving they can be shelving
Perfect	V-ing perfect
I can have shelved you can have shelved he can have shelved we can have shelved you can have shelved they can have shelved	I can have been shelving you can have been shelving he can have been shelving we can have been shelving you can have been shelving they can have been shelving

Negation

Simple form	V-ing form
I can't shelve you can't shelve he can't shelve we can't shelve you can't shelve they can't shelve	I can't be shelving you can't be shelving he can't be shelving we can't be shelving you can't be shelving they can't be shelving
Perfect	V-ing perfect
I can't have shelved you can't have shelved he can't have shelved we can't have shelved you can't have shelved they can't have shelved	I can't have been shelving you can't have been shelving he can't have been shelving we can't have been shelving you can't have been shelving they can't have been shelving

Interrogative form

Simple form	V-ing form
can I shelve? can you shelve? can he shelve? can we shelve? can you shelve? can they shelve?	can I be shelving? can you be shelving? can he be shelving? can we be shelving? can you be shelving? can they be shelving?
Perfect	V-ing perfect
can I have shelved? can you have shelved? can he have shelved? can we have shelved? can you have shelved? can they have shelved?	can I have been shelving? can you have been shelving? can he have been shelving? can we have been shelving? can you have been shelving? can they have been shelving?

Interro-negative form

Simple form	V-ing form
can't I shelve? can't you shelve? can't he shelve? can't we shelve? can't you shelve? can't they shelve?	can't I be shelving? can't you be shelving? can't he be shelving? can't we be shelving? can't you be shelving? can't they be shelving?
Perfect	V-ing perfect
can't I have shelved? can't you have shelved? can't he have shelved? can't we have shelved? can't you have shelved? can't they have shelved?	can't I have been shelving? can't you have been shelving? can't he have been shelving? can't we have been shelving? can't you have been shelving? can't they have been shelving?