## Calculation of Belyi functions

performed by Yuri Matiyasevich

In 2016 I wrote a program for calculating
Belyi functions
for trees with weighted edges. Here are results of some calculations.
Trees from orbits
12.3,
12.8,
12.9
from paper by N. Adrianov and A. Zvonkin.
These trees are of interest because of the actions of Mathieu groups \(M_{12}\) on them.