English verb conjugation
CAN PROTRACT

Regular verb: protract - protracted - protracted

Affirmation

Simple form	V-ing form
I can protract you can protract he can protract we can protract you can protract they can protract	I can be protracting you can be protracting he can be protracting we can be protracting you can be protracting they can be protracting
Perfect	V-ing perfect
I can have protracted you can have protracted he can have protracted we can have protracted you can have protracted they can have protracted	I can have been protracting you can have been protracting he can have been protracting we can have been protracting you can have been protracting they can have been protracting

Negation

Simple form	V-ing form
I can't protract you can't protract he can't protract we can't protract you can't protract they can't protract	I can't be protracting you can't be protracting he can't be protracting we can't be protracting you can't be protracting they can't be protracting
Perfect	V-ing perfect
I can't have protracted you can't have protracted he can't have protracted we can't have protracted you can't have protracted they can't have protracted	I can't have been protracting you can't have been protracting he can't have been protracting we can't have been protracting you can't have been protracting they can't have been protracting

Interrogative form

Simple form	V-ing form
can I protract? can you protract? can he protract? can we protract? can you protract? can they protract?	can I be protracting? can you be protracting? can he be protracting? can we be protracting? can you be protracting? can they be protracting?
Perfect	V-ing perfect
can I have protracted? can you have protracted? can he have protracted? can we have protracted? can you have protracted? can they have protracted?	can I have been protracting? can you have been protracting? can he have been protracting? can we have been protracting? can you have been protracting? can they have been protracting?

Interro-negative form

Simple form	V-ing form
can't I protract? can't you protract? can't he protract? can't we protract? can't you protract? can't they protract?	can't I be protracting? can't you be protracting? can't he be protracting? can't we be protracting? can't you be protracting? can't they be protracting?
Perfect	V-ing perfect
can't I have protracted? can't you have protracted? can't he have protracted? can't we have protracted? can't you have protracted? can't they have protracted?	can't I have been protracting? can't you have been protracting? can't he have been protracting? can't we have been protracting? can't you have been protracting? can't they have been protracting?