Present participle; Past participle - subpoenaing - subpoenaed Present - subpoena - subpoena - subpoenas - subpoena - subpoena - subpoena Past - subpoenaed - subpoenaed - subpoenaed - subpoenaed - subpoenaed - subpoenaed Future - will subpoena - will subpoena - will subpoena - will subpoena - will subpoena - will subpoena Present conditional - would subpoena - would subpoena - would subpoena - would subpoena - would subpoena - would subpoena Present Perfect - have subpoenaed - have subpoenaed - has subpoenaed - have subpoenaed - have subpoenaed - have subpoenaed Past Perfect - had subpoenaed - had subpoenaed - had subpoenaed - had subpoenaed - had subpoenaed - had subpoenaed Future Perfect - will have subpoenaed - will have subpoenaed - will have subpoenaed - will have subpoenaed - will have subpoenaed - will have subpoenaed Past conditional - would have subpoenaed - would have subpoenaed - would have subpoenaed - would have subpoenaed - would have subpoenaed - would have subpoenaed Imperative - - - subpoena - - - - - - - -