C1111233131211111211113313331333133313232321333133313133313113313331322111   >>    C111123313121111121111331333133313331323232133313331313331311331333132211   <<    C1111233131211111211113313331333133313232321333133313133313113313331322113   >>      C1111233131211111211113313331333133313232321333133313133313113313331322112   >>