C313212111113331323312111133133313331333133312121111331313331123313221211   >>    C31321211111333132331211113313331333133313331212111133131333112331322121   <<    C313212111113331323312111133133313331333133312121111331313331123313221213   >>      C313212111113331323312111133133313331333133312121111331313331123313221212   >>