Revision history of "an empty string is not a natural number" (Z13498)

Titia vovo: de dzesi tata siwo ƒe vovototowo nedi be yea kpɔ ɖa, eye na tia 'enter' alo kpe si le eɖome.
Gɔmeɖeɖe: (yeyea) = vovototo tso tata mamlea gbɔ, (doŋgɔ) = vovototo tso tata si do ŋgɔ gbɔ, s = tɔtrɔ suɛ.