English verb conjugation
CAN RAREFY

Regular verb: rarefy - rarefied - rarefied

Affirmation

Simple form	V-ing form
I can rarefy you can rarefy he can rarefy we can rarefy you can rarefy they can rarefy	I can be rarefying you can be rarefying he can be rarefying we can be rarefying you can be rarefying they can be rarefying
Perfect	V-ing perfect
I can have rarefied you can have rarefied he can have rarefied we can have rarefied you can have rarefied they can have rarefied	I can have been rarefying you can have been rarefying he can have been rarefying we can have been rarefying you can have been rarefying they can have been rarefying

Negation

Simple form	V-ing form
I can't rarefy you can't rarefy he can't rarefy we can't rarefy you can't rarefy they can't rarefy	I can't be rarefying you can't be rarefying he can't be rarefying we can't be rarefying you can't be rarefying they can't be rarefying
Perfect	V-ing perfect
I can't have rarefied you can't have rarefied he can't have rarefied we can't have rarefied you can't have rarefied they can't have rarefied	I can't have been rarefying you can't have been rarefying he can't have been rarefying we can't have been rarefying you can't have been rarefying they can't have been rarefying

Interrogative form

Simple form	V-ing form
can I rarefy? can you rarefy? can he rarefy? can we rarefy? can you rarefy? can they rarefy?	can I be rarefying? can you be rarefying? can he be rarefying? can we be rarefying? can you be rarefying? can they be rarefying?
Perfect	V-ing perfect
can I have rarefied? can you have rarefied? can he have rarefied? can we have rarefied? can you have rarefied? can they have rarefied?	can I have been rarefying? can you have been rarefying? can he have been rarefying? can we have been rarefying? can you have been rarefying? can they have been rarefying?

Interro-negative form

Simple form	V-ing form
can't I rarefy? can't you rarefy? can't he rarefy? can't we rarefy? can't you rarefy? can't they rarefy?	can't I be rarefying? can't you be rarefying? can't he be rarefying? can't we be rarefying? can't you be rarefying? can't they be rarefying?
Perfect	V-ing perfect
can't I have rarefied? can't you have rarefied? can't he have rarefied? can't we have rarefied? can't you have rarefied? can't they have rarefied?	can't I have been rarefying? can't you have been rarefying? can't he have been rarefying? can't we have been rarefying? can't you have been rarefying? can't they have been rarefying?