English verb conjugation
CAN REFRACT

Regular verb: refract - refracted - refracted

Affirmation

Simple form	V-ing form
I can refract you can refract he can refract we can refract you can refract they can refract	I can be refracting you can be refracting he can be refracting we can be refracting you can be refracting they can be refracting
Perfect	V-ing perfect
I can have refracted you can have refracted he can have refracted we can have refracted you can have refracted they can have refracted	I can have been refracting you can have been refracting he can have been refracting we can have been refracting you can have been refracting they can have been refracting

Negation

Simple form	V-ing form
I can't refract you can't refract he can't refract we can't refract you can't refract they can't refract	I can't be refracting you can't be refracting he can't be refracting we can't be refracting you can't be refracting they can't be refracting
Perfect	V-ing perfect
I can't have refracted you can't have refracted he can't have refracted we can't have refracted you can't have refracted they can't have refracted	I can't have been refracting you can't have been refracting he can't have been refracting we can't have been refracting you can't have been refracting they can't have been refracting

Interrogative form

Simple form	V-ing form
can I refract? can you refract? can he refract? can we refract? can you refract? can they refract?	can I be refracting? can you be refracting? can he be refracting? can we be refracting? can you be refracting? can they be refracting?
Perfect	V-ing perfect
can I have refracted? can you have refracted? can he have refracted? can we have refracted? can you have refracted? can they have refracted?	can I have been refracting? can you have been refracting? can he have been refracting? can we have been refracting? can you have been refracting? can they have been refracting?

Interro-negative form

Simple form	V-ing form
can't I refract? can't you refract? can't he refract? can't we refract? can't you refract? can't they refract?	can't I be refracting? can't you be refracting? can't he be refracting? can't we be refracting? can't you be refracting? can't they be refracting?
Perfect	V-ing perfect
can't I have refracted? can't you have refracted? can't he have refracted? can't we have refracted? can't you have refracted? can't they have refracted?	can't I have been refracting? can't you have been refracting? can't he have been refracting? can't we have been refracting? can't you have been refracting? can't they have been refracting?