C1111233131211111211113313331333133313331333133313331333133313232122333131   >>    C111123313121111121111331333133313331333133313331333133313331323212233313   <<    C1111233131211111211113313331333133313331333133313331333133313232122333133   >>      C1111233131211111211113313331333133313331333133313331333133313232122333132   >>