Egyptian language
Middle Egyptian

In Middle Egyptian (2055–1650 BC), a number of consonantal shifts take place. By the beginning of the Middle Kingdom period, / z / and / s / had merged, and the graphemes ⟨ s ⟩ and ⟨ z ⟩ are used interchangeably. In addition, / j / had become / ʔ / word-initially in an unstressed syllable (⟨ jwn ⟩ /jaˈwin/ > */ʔaˈwin/ "colour") and after a stressed vowel (⟨ ḥjpw ⟩ */ˈħujpVw/ > /ˈħeʔp(Vw)/ ' Apis').
detectable_content:postscript, combination:two_responses