G. initial [θ] sometimes became [f] before [l], [r], [w]; [θ{rlw}-] > [f{rlw}-]

⚠️G. initial [θ] sometimes became [f] before [l], [r], [w]; [θ{rlw}-] > [f{rlw}-]
HSG/§2.4

Order (05900)

After 05800 [s] became [θ] before [l], [r], [w]

Phonetic Rule Elements

[θl-] > [fl-]
[θr-] > [fr-]
[θw-] > [fw-]