C1111233131211111211113313331333133313331333133313331333132233132212131   >>    C111123313121111121111331333133313331333133313331333133313223313221213   <<    C1111233131211111211113313331333133313331333133313331333132233132212133   >>      C1111233131211111211113313331333133313331333133313331333132233132212132   >>