C313212111133131211331333133313331333133311233133313221211111333133313123221   >>    C31321211113313121133133313331333133313331123313331322121111133313331312322   <<    C313212111133131211331333133313331333133311233133313221211111333133313123223   >>      C313212111133131211331333133313331333133311233133313221211111333133313123222   >>