Present participle; Past participle - stimulating - stimulated Present - stimulate - stimulate - stimulates - stimulate - stimulate - stimulate Past - stimulated - stimulated - stimulated - stimulated - stimulated - stimulated Future - will stimulate - will stimulate - will stimulate - will stimulate - will stimulate - will stimulate Present conditional - would stimulate - would stimulate - would stimulate - would stimulate - would stimulate - would stimulate Present Perfect - have stimulated - have stimulated - has stimulated - have stimulated - have stimulated - have stimulated Past Perfect - had stimulated - had stimulated - had stimulated - had stimulated - had stimulated - had stimulated Future Perfect - will have stimulated - will have stimulated - will have stimulated - will have stimulated - will have stimulated - will have stimulated Past conditional - would have stimulated - would have stimulated - would have stimulated - would have stimulated - would have stimulated - would have stimulated Imperative - - - stimulate - - - - - - - -