C1111233131211111211113313331333133313232321333133313331312111323132331   >>    C111123313121111121111331333133313331323232133313331333131211132313233   <<    C1111233131211111211113313331333133313232321333133313331312111323132333   >>      C1111233131211111211113313331333133313232321333133313331312111323132332   >>