S. initial [hl], [hr] became [l̥], [r̥]; [h{lr}-] > [{l̥r̥}-]

Phonetic Rule Elements

[hl-] > [l̥-]
[hr-] > [r̥-]

N. initial [hl], [hr] became [l̥], [r̥]; [h{lr}-] > [{l̥r̥}-]

GS/§4.131 @@@

Phonetic Rule Elements

[hl-] > [l̥-]
[hr-] > [r̥-]

Phonetic Rule Examples

hrass > r̥ass hr- > r̥- ᴹ✶khrassē > N. rhass ✧ Ety/KHARÁS.007