Present participle; Past participle - necking - necked Present - neck - neck - necks - neck - neck - neck Past - necked - necked - necked - necked - necked - necked Future - will neck - will neck - will neck - will neck - will neck - will neck Present conditional - would neck - would neck - would neck - would neck - would neck - would neck Present Perfect - have necked - have necked - has necked - have necked - have necked - have necked Past Perfect - had necked - had necked - had necked - had necked - had necked - had necked Future Perfect - will have necked - will have necked - will have necked - will have necked - will have necked - will have necked Past conditional - would have necked - would have necked - would have necked - would have necked - would have necked - would have necked Imperative - - - neck - - - - - - - -