English verb conjugation
COULD PROTRUDE

Regular verb: protrude - protruded - protruded

Affirmation

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

Negation

Simple form	V-ing form
I could not protrude you could not protrude she could not protrude we could not protrude you could not protrude they could not protrude	I could not be protruding you could not be protruding she could not be protruding we could not be protruding you could not be protruding they could not be protruding
Perfect	V-ing perfect
I could not have protruded you could not have protruded she could not have protruded we could not have protruded you could not have protruded they could not have protruded	I could not have been protruding you could not have been protruding she could not have been protruding we could not have been protruding you could not have been protruding they could not have been protruding

Interrogative form

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

Interro-negative form

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