m=open("C1_bigrammid.csv", encoding="utf-8").readlines()
def sorteerija(rida):
   r=rida.split(";")
   if len(r[1])<5: return ""
   return r[1].split()[1]+r[2].split()[1]
m.sort(key=sorteerija)
f2=open("c1sort.csv", "w", encoding="utf-8")
print("".join(m), file=f2)
f2.close()