def asenda(symbol):
   if symbol in "aeiouõäöü": return "t"
   if symbol in "gbdkpt": return "s"
   if symbol in "hjs": return "h"
   if symbol in "lmnrv": return "e"
   if symbol in "cfqxyz": return "v"
   if symbol in " -\t": return "_"
   if symbol in "0123456789": return "5"
   return "?"
   
tekst="13 tassi + sinised sokid?"
uuritav="".join([asenda(taht) for taht in tekst])
print(uuritav)