E19/E20/E21/E22/E23/E24/E25/E26/E27 splits Yirrk-Mel [yrm] and Yir Yoront [yyr] but the two are easily intelligible ( Barry Alpher 1991 ). See also: Yir-Yoront [yiy].
Glottolog
[yyr] at ISO 639-3
[yyr] at OLAC
[yyr] at IMTVault
Yir Yoront at WALS