3.15 yr-Contraction P-14.

The underlying sequence /yr/ occurs over a morpheme boundary in combinations involving Locative case suffix /-ruj/ which can be added to verbs (to form Locative relative clauses) as well as to nouns. The /y/ is regularly deleted, though occasionally retained. Deletion is seen in /wu-ga-ruj/ 'in/at the nest’ from //uG-ay-ruj// and in /wuru=lha-'-ruj/ '(the place) where they were standing' from //wuru=lha-y-ruj// (P-14 might be merged with P-26, below.)

It is not clear whether stem-final /w/ before /r/ is also deleted. In theory, such a combination could occur when a noun like /gandhaw/ 'bittern (bird sp.)' is followed by /-ruj/ However, there are very few nouns (and no verbs) ending in /w/ some of them having other variants not ending in /w/ and for semantic reasons informants rejected Locative case forms of them.

(P-14)yr-Contraction (usual but not obligatory)
y → Ø // ___r