English verb conjugation
CAN PROTRUDE

Regular verb: protrude - protruded - protruded

Affirmation

Simple form	V-ing form
I can protrude you can protrude he can protrude we can protrude you can protrude they can protrude	I can be protruding you can be protruding he can be protruding we can be protruding you can be protruding they can be protruding
Perfect	V-ing perfect
I can have protruded you can have protruded he can have protruded we can have protruded you can have protruded they can have protruded	I can have been protruding you can have been protruding he can have been protruding we can have been protruding you can have been protruding they can have been protruding

Negation

Simple form	V-ing form
I cannot protrude you cannot protrude he cannot protrude we cannot protrude you cannot protrude they cannot protrude	I cannot be protruding you cannot be protruding he cannot be protruding we cannot be protruding you cannot be protruding they cannot be protruding
Perfect	V-ing perfect
I cannot have protruded you cannot have protruded he cannot have protruded we cannot have protruded you cannot have protruded they cannot have protruded	I cannot have been protruding you cannot have been protruding he cannot have been protruding we cannot have been protruding you cannot have been protruding they cannot have been protruding

Interrogative form

Simple form	V-ing form
can I protrude? can you protrude? can he protrude? can we protrude? can you protrude? can they protrude?	can I be protruding? can you be protruding? can he be protruding? can we be protruding? can you be protruding? can they be protruding?
Perfect	V-ing perfect
can I have protruded? can you have protruded? can he have protruded? can we have protruded? can you have protruded? can they have protruded?	can I have been protruding? can you have been protruding? can he have been protruding? can we have been protruding? can you have been protruding? can they have been protruding?

Interro-negative form

Simple form	V-ing form
can I not protrude? can you not protrude? can he not protrude? can we not protrude? can you not protrude? can they not protrude?	can I not be protruding? can you not be protruding? can he not be protruding? can we not be protruding? can you not be protruding? can they not be protruding?
Perfect	V-ing perfect
can I not have protruded? can you not have protruded? can he not have protruded? can we not have protruded? can you not have protruded? can they not have protruded?	can I not have been protruding? can you not have been protruding? can he not have been protruding? can we not have been protruding? can you not have been protruding? can they not have been protruding?