  Based on Tiankai Liu's PhD thesis (MIT, 2014), we give a complete
classification of local topological types of singularities with two Newton
pairs on rational unicuspidal complex projective plane curves. We show that all
but two possible local types on Liu's list are realizable by the work of H.
Kashiwara, M. Miyanishi, T. Sugie, T. Fenske, K. Tono and S. Y. Orevkov.
