can varnish
Regular verb: varnish - varnished- varnished

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?