S. medial [mɸ], [nθ], [ŋx], [lθ] became [mm], [nn], [ŋg], [ll]; [-{mɸ|nθ|ŋx|lθ}-] > [-{mm|nn|ŋg|l̥l̥}-]

@@@ but Gilthoniel

References ✧ PE17/131.3012; VT42/27.1609

Phonetic Rule Elements

[-mɸ-] > [-mm-] ✧ PE17/131.3213 (mph > mh > mm); VT42/27.1815 (mf > mh; medially)
[-nθ-] > [-nn-] ✧ PE17/131.3215 ( > nh > nn); VT42/27.1813 (nth > nh; medially)
[-ŋx-] > [-ŋg-] ✧ PE17/131.3217 (ŋχ > ngh > ŋg); VT42/27.1814 (nch > ñh; medially)
[-lθ-] > [-ll-] ✧ PE17/131.3212 ( > lh > ll); VT42/27.1901 (lth > lh; medially)

Phonetic Rule Examples

anθa- > anna- -nθ- > -nn- ANA > antha- > S. anha- ✧ PE17/093.2604
daŋxen > daŋgen -ŋx- > -ŋg- dankĭna > daŋχen > danghen > S. dangen ✧ PE17/133.4306

N. medial [mɸ], [nθ], [ŋx] became [mm], [nn], [ŋg]; [-{mɸ|nθ|ŋx}-] > [-{mm|nn|ŋg}-]

GS/§4.112 GS/§4.118 GS/§4.201 @@@ but not -lθ- < -lt-: heltha-

Reference ✧ PE22/032.3406phonetics

Related

Phonetic Rule Elements

[-mɸ-] > [-mm-]
[-nθ-] > [-nn-]
[-ŋx-] > [-ŋg-]

Phonetic Rule Examples

gamɸass > gammass -mɸ- > -mm- ON. gampasse > N. gammas ✧ EtyAC/GAP.008
xamɸa- > xamma- -mɸ- > -mm- ᴹ√KHAP > N. hamma- ✧ Ety/KHAP.008
xamɸad > xammad -mɸ- > -mm- ᴹ√KHAP > N. hammad ✧ Ety/KHAP.010
anθa- > anna- -nθ- > -nn- ᴹ√ANA¹ > N. anno ✧ Ety/ANA¹.026
atlanθa- > atlanna- -nθ- > -nn- ᴹ√TALÁT > N. atlanno ✧ Ety/TALÁT.029
fanθor > fannor -nθ- > -nn- ᴹ✶Spanturo > N. Fennyr/Fennuir ✧ Ety/SPAN.052
gwanθa- > gwanna- -nθ- > -nn- ᴹ✶wanta- > N. gwanno ✧ Ety/WAN.073
gwinθa- > gwinna- -nθ- > -nn- ON. wintha > N. gwinna ✧ Ety/WIN.042
kenθan > kennan -nθ- > -nn- ᴹ√TAN > N. cennan ✧ Ety/TAN.031
kenθan > kennan -nθ- > -nn- ᴹ√KEM > N. cennan ✧ EtyAC/KEM.062
onθa- > onna- -nθ- > -nn- ᴹ√ONO > N. *onna ✧ Ety/ONO.027-2
penθass > pennass -nθ- > -nn- ᴹ√KWET > N. pennas ✧ Ety/KWET.016
penθīnar > pennīnar -nθ- > -nn- ᴹ√KWAT > N. penninar ✧ Ety/YEN.018
tinθa- > tinna- -nθ- > -nn- ᴹ√TIN > N. tinno ✧ Ety/TIN.056
θinθa- > θinna- -nθ- > -nn- ON. thintha > N. thinna ✧ Ety/THIN.063
θinθass > θinnass -nθ- > -nn- ᴹ√STINTĀ > N. thinnas ✧ Ety/STINTĀ.010
baŋxa- > baŋga- -ŋx- > -ŋg- ᴹ√MBAKH > N. banga ✧ Ety/MBAKH.012
daŋxen > daŋgen -ŋx- > -ŋg- ᴹ√NDAK > N. dangen ✧ Ety/NDAK.023
taŋxada- > taŋgada- -ŋx- > -ŋg- ᴹ✶tánkā̆ta- > N. tangado ✧ PE17/044.1902
taŋxant > taŋgant -ŋx- > -ŋg- ON. tankánte > N. tangant ✧ PE17/044.1912