Winquist and Hansen classification

Senngo Winquist e Hansen ko feere renndinde ɓuuɓri ƴiiƴam tuugiindi e tolno ɓuuɓri.

 Senngo 

 Sifaa sifaa 
I Feccere ɓuuɓnde walla juutnde, nde alaa ko ɓuuɓnata walla feccere buubaaji tokosere nde alaa njaajeendi ƴiyal ngal, tawa ina famɗi 25%.

II Taƴaaɗo e feccere buubaaji 50% walla ko ɓuri ɗum e njaajeendi ƴiyal

III Taƴaaɗo e feccere buubaaji mawnde ɓurnde 50% e njaajeendi ƴiyal

IV Kosam segmental

 Tuugnorgal