C1111233131211111211113313331333133313331322322331333133112132332323311   >>    C111123313121111121111331333133313331333132232233133313311213233232331   <<    C1111233131211111211113313331333133313331322322331333133112132332323313   >>      C1111233131211111211113313331333133313331322322331333133112132332323312   >>