bbbbbbb bohorok bok-bok bokonon bon-bon boo-boo boo-hoo boobook borkhun bornuur borobul boronuk bouhlou boukoul boulbon bounouh bourbon bourlon bourrou brokour bukhoor bukhoro bullrun bunroku burunlu hob-nob holborn holburn honnour hoo-hoo hoolulu horrour houlour hub-bub hullour hur-bur khokhol khonnor khoronk khubkuh kobroor kohunlu kokonor kokorou kokubun kolhorn kolluru kolobok kolokol konuklu konullu kor-kor korborn korkoro kouloun kulullu kunukku kuokunu kur-kol kurnool loonloo looroll lubhuku lukunor nonbook nonburn nonnull norrbro nuk-luk nukuoro nurkhon olonkho on-hook oroboro orokolo oronoko rbubnon roll-on rollkur rubbour ruh-roh runbook ububboo unh-unh