C1111233131211111211113313133313331323133313231323223313223331211   >>    C111123313121111121111331313331333132313331323132322331322333121   <<    C1111233131211111211113313133313331323133313231323223313223331213   >>      C1111233131211111211113313133313331323133313231323223313223331212   >>