C13332313311211113313331333133313133313232233121111331333133313331123312121   >>    C1333231331121111331333133313331313331323223312111133133313331333112331212   <<    C13332313311211113313331333133313133313232233121111331333133313331123312123   >>      C13332313311211113313331333133313133313232233121111331333133313331123312122   >>