Riwayat perubahan "an empty string is not a natural number" (Z13498)

Tulawota diff: Tuwoti kasi lo radio loboli'a u mopobandingiyo wawu woduta enter meyalo tombol to tibawa.
Legenda: (mst) = hihede wolo biloli'a pulitiyo, (dīpo) = hihede wolo u biloli'a muloolo, k = bilili'o ngo'idi.