C1111233131211111211113313331333133313232321333133313133313113313331333212331   >>    C111123313121111121111331333133313331323232133313331313331311331333133321233   <<    C1111233131211111211113313331333133313232321333133313133313113313331333212333   >>      C1111233131211111211113313331333133313232321333133313133313113313331333212332   >>