Present participle; Past participle - case-hardening - case-hardened Present - case-harden - case-harden - case-hardens - case-harden - case-harden - case-harden Past - case-hardened - case-hardened - case-hardened - case-hardened - case-hardened - case-hardened Future - will case-harden - will case-harden - will case-harden - will case-harden - will case-harden - will case-harden Present conditional - would case-harden - would case-harden - would case-harden - would case-harden - would case-harden - would case-harden Present Perfect - have case-hardened - have case-hardened - has case-hardened - have case-hardened - have case-hardened - have case-hardened Past Perfect - had case-hardened - had case-hardened - had case-hardened - had case-hardened - had case-hardened - had case-hardened Future Perfect - will have case-hardened - will have case-hardened - will have case-hardened - will have case-hardened - will have case-hardened - will have case-hardened Past conditional - would have case-hardened - would have case-hardened - would have case-hardened - would have case-hardened - would have case-hardened - would have case-hardened Imperative - - - case-harden - - - - - - - -