Maɓallin dangi na ƙarshen biyu na Haɗin Faɗawa daidai gwargwado zuwa ga kusurwar sa. Ana kiran wannan a matsayin koma baya, motsi ta gefe.

Wannan motsi yakan haifar da ƙarfin waje kamar ayyukan girgizar ƙasa, daidaita tsarin, ko canjin matsa lamba.
Ƙarfe na fadada haɗin gwiwa sune masu haɗawa masu sassauƙa waɗanda aka tsara don ɗaukar motsi na gefe, da kiyaye amincin tsarin a cikin mahalli masu buƙata.