English verb conjugation
CAN TARNISH

Regular verb: tarnish - tarnished - tarnished

Affirmation

Simple form	V-ing form
I can tarnish you can tarnish he can tarnish we can tarnish you can tarnish they can tarnish	I can be tarnishing you can be tarnishing he can be tarnishing we can be tarnishing you can be tarnishing they can be tarnishing
Perfect	V-ing perfect
I can have tarnished you can have tarnished he can have tarnished we can have tarnished you can have tarnished they can have tarnished	I can have been tarnishing you can have been tarnishing he can have been tarnishing we can have been tarnishing you can have been tarnishing they can have been tarnishing

Negation

Simple form	V-ing form
I can't tarnish you can't tarnish he can't tarnish we can't tarnish you can't tarnish they can't tarnish	I can't be tarnishing you can't be tarnishing he can't be tarnishing we can't be tarnishing you can't be tarnishing they can't be tarnishing
Perfect	V-ing perfect
I can't have tarnished you can't have tarnished he can't have tarnished we can't have tarnished you can't have tarnished they can't have tarnished	I can't have been tarnishing you can't have been tarnishing he can't have been tarnishing we can't have been tarnishing you can't have been tarnishing they can't have been tarnishing

Interrogative form

Simple form	V-ing form
can I tarnish? can you tarnish? can he tarnish? can we tarnish? can you tarnish? can they tarnish?	can I be tarnishing? can you be tarnishing? can he be tarnishing? can we be tarnishing? can you be tarnishing? can they be tarnishing?
Perfect	V-ing perfect
can I have tarnished? can you have tarnished? can he have tarnished? can we have tarnished? can you have tarnished? can they have tarnished?	can I have been tarnishing? can you have been tarnishing? can he have been tarnishing? can we have been tarnishing? can you have been tarnishing? can they have been tarnishing?

Interro-negative form

Simple form	V-ing form
can't I tarnish? can't you tarnish? can't he tarnish? can't we tarnish? can't you tarnish? can't they tarnish?	can't I be tarnishing? can't you be tarnishing? can't he be tarnishing? can't we be tarnishing? can't you be tarnishing? can't they be tarnishing?
Perfect	V-ing perfect
can't I have tarnished? can't you have tarnished? can't he have tarnished? can't we have tarnished? can't you have tarnished? can't they have tarnished?	can't I have been tarnishing? can't you have been tarnishing? can't he have been tarnishing? can't we have been tarnishing? can't you have been tarnishing? can't they have been tarnishing?