Letoto la libui tsa WS tse phahameng ka ho fetesisa li hlophisitsoe hantle ke li-unit tsa libui tse sebetsang hantle tsa lapeng, 'me li sebelisoa haholo lits'ebetsong tsa maqhubu a felletseng e le tlatsetso ho lihlopha tsa maqhubu a tlase haholo.E na le bokhoni bo botle ba ho fokotsa maqhubu a tlase haholo 'me e etselitsoe ka ho khetheha ho matlafatsa bass ea sistimi e matlafatsang molumo.E hlahisa phello e makatsang le e matla ea li-bass tse feteletseng.E boetse e na le karabelo ea maqhubu a pharalletseng le curve ea karabelo e boreleli.E ka ba lerata ka matla a phahameng E ntse e boloka phello e phethahetseng ka ho fetisisa ea bass le ho matlafatsa molumo sebakeng se sebetsang se sithabetsang.