Reconstructions

PWS
*riˀ-at- - lung (SED I No. 224)
Usually compared to Akk. irtu, Ugr. ˀirt. ‘breast’; reconstruction of two different roots probably related by metathesis (cf. *ˀir(r)-at- ‘chest, breast’) is preferable.
PWS
*rˀy - to see (Kogan 2015:394)
PWS
*rigl- - foot (SED I No. 228)
Gez. ˀəgr ‘foot’ is probably not to be identified with this root
PWS
*rγb - to be hungry (SED I No. 59ᵥ; Kogan 2011: 237)
see also *raγab- - hunger
PWS
*raγab- - hunger (SED I No. 59; Kogan 2015: 121)
see also *rγb - to be hungry
PWS
*rV̄ḥ - wind (Fronzaroli 1965a: 139, 145; Kogan 2011: 193; Bulakh 2005b:415‒420)

see also *rwḥ - to blow

PWS
*rḥb - to be wide, broad (Kogan 2015: 95)
PWS
*raḫil- - ewe (SED II No. 188; Kogan 2011: 205)
PWS
*raḫam- - Egyptian vulture (SED II No. 189; Kogan 2011: 210)
PWS
*rVk(u)b(-­at)­- - knee (SED I No. 232)
Metathetic of *birk- ‘knee’