ᴹAQ. [r] became [s] after voiceless stops and aspirates; [{ptkpʰtʰkʰ}r] > [{ptkpʰtʰkʰ}s]

ᴹAQ. [r] became [s] after voiceless stops and aspirates; [{ptkpʰtʰkʰ}r] > [{ptkpʰtʰkʰ}s]

References ✧ PE19/40, 43-44, 47

Order (01100)

After	01000	[r], [l] often became syllabic in clusters
Before	02000	aspirates became voiceless spirants

Phonetic Rule Elements

[pr]	>	[ps]	✧ PE19/50 (pr > ps)
[tr]	>	[ts]	✧ PE19/50 (tr > ts)
[kr]	>	[ks]	✧ PE19/50 (kr > ks)
[pʰr]	>	[ps]	✧ PE19/50 (phr > ps)
[tʰr]	>	[ts]	✧ PE19/50 (thr > ts)
[kʰr]	>	[ks]	✧ PE19/50 (khr > ks)
[ntr]	>	[ns]	✧ PE19/50 (ntr > ns; rare)

Phonetic Rule Examples

kwentro > kwentso	tr > ts	ᴹ✶kwentso > ᴹQ. †quenso	✧ PE19/40
mitra > mitsa	tr > ts	ᴹ✶mitra > ᴹQ. mitsa	✧ EtyAC/MIT
netʰrā > netsā	tʰr > ts	ᴹ✶neth-rā > ᴹQ. nessa	✧ Ety/NETH