Present participle; Past participle - sipping - sipped Present - sip - sip - sips - sip - sip - sip Past - sipped - sipped - sipped - sipped - sipped - sipped Future - will sip - will sip - will sip - will sip - will sip - will sip Present conditional - would sip - would sip - would sip - would sip - would sip - would sip Present Perfect - have sipped - have sipped - has sipped - have sipped - have sipped - have sipped Past Perfect - had sipped - had sipped - had sipped - had sipped - had sipped - had sipped Future Perfect - will have sipped - will have sipped - will have sipped - will have sipped - will have sipped - will have sipped Past conditional - would have sipped - would have sipped - would have sipped - would have sipped - would have sipped - would have sipped Imperative - - - sip - - - - - - - -