C111123313121111121111331333133313331331121111133313331333133313331323211112121   >>    C11112331312111112111133133313331333133112111113331333133313331333132321111212   <<    C111123313121111121111331333133313331331121111133313331333133313331323211112123   >>      C111123313121111121111331333133313331331121111133313331333133313331323211112122   >>