Present participle; Past participle - theorizing - theorized Present - theorize - theorize - theorizes - theorize - theorize - theorize Past - theorized - theorized - theorized - theorized - theorized - theorized Future - will theorize - will theorize - will theorize - will theorize - will theorize - will theorize Present conditional - would theorize - would theorize - would theorize - would theorize - would theorize - would theorize Present Perfect - have theorized - have theorized - has theorized - have theorized - have theorized - have theorized Past Perfect - had theorized - had theorized - had theorized - had theorized - had theorized - had theorized Future Perfect - will have theorized - will have theorized - will have theorized - will have theorized - will have theorized - will have theorized Past conditional - would have theorized - would have theorized - would have theorized - would have theorized - would have theorized - would have theorized Imperative - - - theorize - - - - - - - -