C313212111113331323312111133133313331333133313331333133313231323133311233121   >>    C31321211111333132331211113313331333133313331333133313331323132313331123312   <<    C313212111113331323312111133133313331333133313331333133313231323133311233123   >>      C313212111113331323312111133133313331333133313331333133313231323133311233122   >>