Present participle; Past participle - clambering - clambered Present - clamber - clamber - clambers - clamber - clamber - clamber Past - clambered - clambered - clambered - clambered - clambered - clambered Future - will clamber - will clamber - will clamber - will clamber - will clamber - will clamber Present conditional - would clamber - would clamber - would clamber - would clamber - would clamber - would clamber Present Perfect - have clambered - have clambered - has clambered - have clambered - have clambered - have clambered Past Perfect - had clambered - had clambered - had clambered - had clambered - had clambered - had clambered Future Perfect - will have clambered - will have clambered - will have clambered - will have clambered - will have clambered - will have clambered Past conditional - would have clambered - would have clambered - would have clambered - would have clambered - would have clambered - would have clambered Imperative - - - clamber - - - - - - - -