C313212111113331323312111133133313331333133313331333133313231333133313123313211   >>    C31321211111333132331211113313331333133313331333133313331323133313331312331321   <<    C313212111113331323312111133133313331333133313331333133313231333133313123313213   >>      C313212111113331323312111133133313331333133313331333133313231333133313123313212   >>