conlangs1-6  Exercise 1: Toy Sound Changes
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  Ancestor    Daughter 1 (vowels kept)    Daughter 2 (vowels lost; k > g)
  ----------  --------------------------  --------------------------------
  mina        mina                        min
  paka        paka                        pag
  lala        lala                        lal

Why paka becomes pag in daughter 2:

  Two rules apply in order. First, k becomes g between vowels: pa-k-a gives
  paga. Then the final vowel is lost: paga gives pag.

Check: the order matters. If the final vowel were lost first, k would no
longer sit between two vowels and the change to g would not apply, giving pak.
This shows why a historical language needs its rules in order, just as real
sound changes happen in sequence.