Present participle; Past participle - subbing - subbed Present - sub - sub - subs - sub - sub - sub Past - subbed - subbed - subbed - subbed - subbed - subbed Future - will sub - will sub - will sub - will sub - will sub - will sub Present conditional - would sub - would sub - would sub - would sub - would sub - would sub Present Perfect - have subbed - have subbed - has subbed - have subbed - have subbed - have subbed Past Perfect - had subbed - had subbed - had subbed - had subbed - had subbed - had subbed Future Perfect - will have subbed - will have subbed - will have subbed - will have subbed - will have subbed - will have subbed Past conditional - would have subbed - would have subbed - would have subbed - would have subbed - would have subbed - would have subbed Imperative - - - sub - - - - - - - -