_(7)

d= {}
for t in l_t:
    tpl= (t[3], t[4])
    key= (max(tpl), min(tpl))
    if key in d:
        d[key]+=1
    else:
        d[key]= 1
print('A stat.txt állomány adatainak írása…')
with open('inf_e_20071106_m_04_stat.txt', 'w') as f:
    for key in d:
        f.write('%d-%d: %d darab\n' % (key[0], key[1], d[key]))