C1111233131211111211113313331333133313331322322331312111133131121323311   >>    C111123313121111121111331333133313331333132232233131211113313112132331   <<    C1111233131211111211113313331333133313331322322331312111133131121323313   >>      C1111233131211111211113313331333133313331322322331312111133131121323312   >>