Present participle; Past participle - protruding - protruded Present - protrude - protrude - protrudes - protrude - protrude - protrude Past - protruded - protruded - protruded - protruded - protruded - protruded Future - will protrude - will protrude - will protrude - will protrude - will protrude - will protrude Present conditional - would protrude - would protrude - would protrude - would protrude - would protrude - would protrude Present Perfect - have protruded - have protruded - has protruded - have protruded - have protruded - have protruded Past Perfect - had protruded - had protruded - had protruded - had protruded - had protruded - had protruded Future Perfect - will have protruded - will have protruded - will have protruded - will have protruded - will have protruded - will have protruded Past conditional - would have protruded - would have protruded - would have protruded - would have protruded - would have protruded - would have protruded Imperative - - - protrude - - - - - - - -