Present participle; Past participle - systematizing - systematized Present - systematize - systematize - systematizes - systematize - systematize - systematize Past - systematized - systematized - systematized - systematized - systematized - systematized Future - will systematize - will systematize - will systematize - will systematize - will systematize - will systematize Present conditional - would systematize - would systematize - would systematize - would systematize - would systematize - would systematize Present Perfect - have systematized - have systematized - has systematized - have systematized - have systematized - have systematized Past Perfect - had systematized - had systematized - had systematized - had systematized - had systematized - had systematized Future Perfect - will have systematized - will have systematized - will have systematized - will have systematized - will have systematized - will have systematized Past conditional - would have systematized - would have systematized - would have systematized - would have systematized - would have systematized - would have systematized Imperative - - - systematize - - - - - - - -