Present participle; Past participle - severing - severed Present - sever - sever - severs - sever - sever - sever Past - severed - severed - severed - severed - severed - severed Future - will sever - will sever - will sever - will sever - will sever - will sever Present conditional - would sever - would sever - would sever - would sever - would sever - would sever Present Perfect - have severed - have severed - has severed - have severed - have severed - have severed Past Perfect - had severed - had severed - had severed - had severed - had severed - had severed Future Perfect - will have severed - will have severed - will have severed - will have severed - will have severed - will have severed Past conditional - would have severed - would have severed - would have severed - would have severed - would have severed - would have severed Imperative - - - sever - - - - - - - -