Comment: Within PL there is a difficult interrelation between four roots: *[hI]alχä- 'long', *hI[a]χV- 'high', *jaq:V 'high' and *ʔarχ:(Vl)- 'far' q.v. In several languages contaminations have arisen. Thus, -ʁ- in Lezg. jarʁi 'long' is obviously due to contamination with jarʁal 'far'.
Several languages reflect metathesized forms (*[hI]alχä- ~ *laχä- ~ *χalä- and, with Ablaut, *χolä-), which is usual for verbal/adjectival stems. Note that all these variants are not merely Lezgian, but have external parallels as well.