C1111233131211111211113313331333133313331333133313331333133313113313122331221   >>    C111123313121111121111331333133313331333133313331333133313331311331312233122   <<    C1111233131211111211113313331333133313331333133313331333133313113313122331223   >>      C1111233131211111211113313331333133313331333133313331333133313113313122331222   >>