C1111233131211111211113313331333133313232313331333131231233131111   >>    C111123313121111121111331333133313331323231333133313123123313111   <<    C1111233131211111211113313331333133313232313331333131231233131113   >>      C1111233131211111211113313331333133313232313331333131231233131112   >>