Present participle; Past participle - clamming - clammed Present - clam - clam - clams - clam - clam - clam Past - clammed - clammed - clammed - clammed - clammed - clammed Future - will clam - will clam - will clam - will clam - will clam - will clam Present conditional - would clam - would clam - would clam - would clam - would clam - would clam Present Perfect - have clammed - have clammed - has clammed - have clammed - have clammed - have clammed Past Perfect - had clammed - had clammed - had clammed - had clammed - had clammed - had clammed Future Perfect - will have clammed - will have clammed - will have clammed - will have clammed - will have clammed - will have clammed Past conditional - would have clammed - would have clammed - would have clammed - would have clammed - would have clammed - would have clammed Imperative - - - clam - - - - - - - -