bǐlún
билунь
би3 лунь2
http://www.chinese-russian.com/zd/ci/158289
bǐlùn
би3 лунь4
http://www.chinese-russian.com/zd/ci/158375
bìlùn
би4 лунь4
http://www.chinese-russian.com/zd/ci/175020