Комментарий: In Ag. Rich. we have ruχ- 'to read', in Lezg. raχa- 'to speak': r- in these forms is a result of merging two roots (PL *ʔiχʷa 'speak, read' and PL *räχʷa(r) 'to sound, resound', opposed in Ag. Bursh.: wa-χʷa- 'speak' vs. ruχa- 'howl, wail; read').
