Notes: The verbal stem as such is reflected only in Av.-And.-Tsezian and WC languages. In most EC languages much more widely spread is the nominal derivate *nhewƛ̣_ŭ 'sleep' (a rather unique case of *n-prefix; perhaps it is actually *mhewƛ̣_ŭ with early dissimilation?), with either long or short first vowel (long *ē is reflected in PN, short *e - in other languages). Note a unique reflex *-wƛ̣- > *-ṗ- in PN, and the irregular development of *ƛ̣ in a tense word > *ƛ̣ in PL. The latter phenomenon is explained obviously by the influence of another NC root, *ɦemƛ̣V 'dream' q.v.