Lida nwere nnukwu ọnụ ụlọ maka mbupu.Ọkọlọtọ ngwakọta nha nha nha kwesịrị ekwesị nwere ike ịkpọ ụdị ụlọ edoziri ma dịkwa mma.Akpa nwere uru nke ntinye ngwa ngwa, mmegharị dị mma, ọtụtụ ntụgharị, na ogologo ndụ ọrụ.Enwere ike iji ya mee ihe na nnukwu ụlọ.Ebe injinia na azụmahịa, obodo na agha.Enwere ike ịtọ ngwaahịa anyị na-emebi emebi dị ka ụlọ akpa ụlọ nwere ike ịhazi, ụlọ akpa welded na ụlọ mbupu, wdg.