C313212111113331323312111133133313331333133313331333133313331333133313131122121   >>    C31321211111333132331211113313331333133313331333133313331333133313331313112212   <<    C313212111113331323312111133133313331333133313331333133313331333133313131122123   >>      C313212111113331323312111133133313331333133313331333133313331333133313131122122   >>