C312312111111331312111133133313331322331333133313331322133313232213233311   >>    C31231211111133131211113313331333132233133313331333132213331323221323331   <<    C312312111111331312111133133313331322331333133313331322133313232213233313   >>      C312312111111331312111133133313331322331333133313331322133313232213233312   >>