C313212111133131211331333133313331333133311233133313233313232233133313112233221   >>    C31321211113313121133133313331333133313331123313331323331323223313331311223322   <<    C313212111133131211331333133313331333133311233133313233313232233133313112233223   >>      C313212111133131211331333133313331333133311233133313233313232233133313112233222   >>