C312312111111331312111133133313331322331333133313331322331323133313232123121   >>    C31231211111133131211113313331333132233133313331333132233132313331323212312   <<    C312312111111331312111133133313331322331333133313331322331323133313232123123   >>      C312312111111331312111133133313331322331333133313331322331323133313232123122   >>