C313212111133131211331333133313331333133313331333133313331323132233312121   >>    C31321211113313121133133313331333133313331333133313331333132313223331212   <<    C313212111133131211331333133313331333133313331333133313331323132233312123   >>      C313212111133131211331333133313331333133313331333133313331323132233312122   >>