C1111233131211111211113313331333131211111211111333133313331333132233131121211   >>    C111123313121111121111331333133313121111121111133313331333133313223313112121   <<    C1111233131211111211113313331333131211111211111333133313331333132233131121213   >>      C1111233131211111211113313331333131211111211111333133313331333132233131121212   >>