C313212111113331323312111133133313331333133313331333133313231333133313232131221   >>    C31321211111333132331211113313331333133313331333133313331323133313331323213122   <<    C313212111113331323312111133133313331333133313331333133313231333133313232131223   >>      C313212111113331323312111133133313331333133313331333133313231333133313232131222   >>