Revised Penal Code, Art. 70

Successive service of sentences; exception. -When the culprit has to serve two or more penalties, he shall serve them simultaneously if the nature of the penalties will so permit; otherwise, said penalties shall be executed successively, following the order of their respective severity, which shall be determined in accordance with the following scale: 1. Death. 2. Reclusion perpetua. 3. Reclusion temporal. 4. Prision mayor. 5. Prision correctional. 6. Arresto mayor. 7. Arresto menor. A person sentenced to destierro who is also sentenced to the penalty of prision or arresto shall be required to serve these latter penalties before serving the penalty of destierro.