Present participle; Past participle - suffering - suffered Present - suffer - suffer - suffers - suffer - suffer - suffer Past - suffered - suffered - suffered - suffered - suffered - suffered Future - will suffer - will suffer - will suffer - will suffer - will suffer - will suffer Present conditional - would suffer - would suffer - would suffer - would suffer - would suffer - would suffer Present Perfect - have suffered - have suffered - has suffered - have suffered - have suffered - have suffered Past Perfect - had suffered - had suffered - had suffered - had suffered - had suffered - had suffered Future Perfect - will have suffered - will have suffered - will have suffered - will have suffered - will have suffered - will have suffered Past conditional - would have suffered - would have suffered - would have suffered - would have suffered - would have suffered - would have suffered Imperative - - - suffer - - - - - - - -