English verb conjugation
CAN VARNISH

Regular verb: varnish - varnished - varnished

Affirmation

Simple form	V-ing form
I can varnish you can varnish she can varnish we can varnish you can varnish they can varnish	I can be varnishing you can be varnishing she can be varnishing we can be varnishing you can be varnishing they can be varnishing
Perfect	V-ing perfect
I can have varnished you can have varnished she can have varnished we can have varnished you can have varnished they can have varnished	I can have been varnishing you can have been varnishing she can have been varnishing we can have been varnishing you can have been varnishing they can have been varnishing

Negation

Simple form	V-ing form
I can't varnish you can't varnish she can't varnish we can't varnish you can't varnish they can't varnish	I can't be varnishing you can't be varnishing she can't be varnishing we can't be varnishing you can't be varnishing they can't be varnishing
Perfect	V-ing perfect
I can't have varnished you can't have varnished she can't have varnished we can't have varnished you can't have varnished they can't have varnished	I can't have been varnishing you can't have been varnishing she can't have been varnishing we can't have been varnishing you can't have been varnishing they can't have been varnishing

Interrogative form

Simple form	V-ing form
can I varnish? can you varnish? can she varnish? can we varnish? can you varnish? can they varnish?	can I be varnishing? can you be varnishing? can she be varnishing? can we be varnishing? can you be varnishing? can they be varnishing?
Perfect	V-ing perfect
can I have varnished? can you have varnished? can she have varnished? can we have varnished? can you have varnished? can they have varnished?	can I have been varnishing? can you have been varnishing? can she have been varnishing? can we have been varnishing? can you have been varnishing? can they have been varnishing?

Interro-negative form

Simple form	V-ing form
can't I varnish? can't you varnish? can't she varnish? can't we varnish? can't you varnish? can't they varnish?	can't I be varnishing? can't you be varnishing? can't she be varnishing? can't we be varnishing? can't you be varnishing? can't they be varnishing?
Perfect	V-ing perfect
can't I have varnished? can't you have varnished? can't she have varnished? can't we have varnished? can't you have varnished? can't they have varnished?	can't I have been varnishing? can't you have been varnishing? can't she have been varnishing? can't we have been varnishing? can't you have been varnishing? can't they have been varnishing?