C1111233131211111211113313331333133313331333133313331333133313223313113133121   >>    C111123313121111121111331333133313331333133313331333133313331322331311313312   <<    C1111233131211111211113313331333133313331333133313331333133313223313113133123   >>      C1111233131211111211113313331333133313331333133313331333133313223313113133122   >>