C1111233131211111211113313331333133313232321333133313331322331323233311   >>    C111123313121111121111331333133313331323232133313331333132233132323331   <<    C1111233131211111211113313331333133313232321333133313331322331323233313   >>      C1111233131211111211113313331333133313232321333133313331322331323233312   >>