C312312111111331312111133133313331333133322331323133313223313232223311   >>    C31231211111133131211113313331333133313332233132313331322331323222331   <<    C312312111111331312111133133313331333133322331323133313223313232223313   >>      C312312111111331312111133133313331333133322331323133313223313232223312   >>