English verb conjugation COULD SHELVE

Regular verb: shelve - shelved - shelved

Affirmation

Simple form

I could shelve
you could shelve
she could shelve
we could shelve
you could shelve
they could shelve

V-ing form

I could be shelving
you could be shelving
she could be shelving
we could be shelving
you could be shelving
they could be shelving

Perfect

I could have shelved
you could have shelved
she could have shelved
we could have shelved
you could have shelved
they could have shelved

V-ing perfect

I could have been shelving
you could have been shelving
she could have been shelving
we could have been shelving
you could have been shelving
they could have been shelving

Negation

Simple form

I could not shelve
you could not shelve
she could not shelve
we could not shelve
you could not shelve
they could not shelve

V-ing form

I could not be shelving
you could not be shelving
she could not be shelving
we could not be shelving
you could not be shelving
they could not be shelving

Perfect

I could not have shelved
you could not have shelved
she could not have shelved
we could not have shelved
you could not have shelved
they could not have shelved

V-ing perfect

I could not have been shelving
you could not have been shelving
she could not have been shelving
we could not have been shelving
you could not have been shelving
they could not have been shelving

Interrogative form

Simple form

could I shelve?
could you shelve?
could she shelve?
could we shelve?
could you shelve?
could they shelve?

V-ing form

could I be shelving?
could you be shelving?
could she be shelving?
could we be shelving?
could you be shelving?
could they be shelving?

Perfect

could I have shelved?
could you have shelved?
could she have shelved?
could we have shelved?
could you have shelved?
could they have shelved?

V-ing perfect

could I have been shelving?
could you have been shelving?
could she have been shelving?
could we have been shelving?
could you have been shelving?
could they have been shelving?

Interro-negative form

Simple form

could I not shelve?
could you not shelve?
could she not shelve?
could we not shelve?
could you not shelve?
could they not shelve?

V-ing form

could I not be shelving?
could you not be shelving?
could she not be shelving?
could we not be shelving?
could you not be shelving?
could they not be shelving?

Perfect

could I not have shelved?
could you not have shelved?
could she not have shelved?
could we not have shelved?
could you not have shelved?
could they not have shelved?

V-ing perfect

could I not have been shelving?
could you not have been shelving?
could she not have been shelving?
could we not have been shelving?
could you not have been shelving?
could they not have been shelving?

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