C313212111113331323312111133133313331333132233133313113311212121   >>    C31321211111333132331211113313331333133313223313331311331121212   <<    C313212111113331323312111133133313331333132233133313113311212123   >>      C313212111113331323312111133133313331333132233133313113311212122   >>