C212313222213113313112113121111331333313331333133313223313331322133322121   >>    C21231322221311331311211312111133133331333133313331322331333132213332212   <<    C212313222213113313112113121111331333313331333133313223313331322133322123   >>      C212313222213113313112113121111331333313331333133313223313331322133322122   >>