C1111233131211111211113313231333133313331323331333133313223313332121   >>    C111123313121111121111331323133313331333132333133313331322331333212   <<    C1111233131211111211113313231333133313331323331333133313223313332123   >>      C1111233131211111211113313231333133313331323331333133313223313332122   >>