C1111233131211111211113313331333133313232321333133313331312213112311   >>    C111123313121111121111331333133313331323232133313331333131221311231   <<    C1111233131211111211113313331333133313232321333133313331312213112313   >>      C1111233131211111211113313331333133313232321333133313331312213112312   >>