bbbb bibb bibi bibo biji biko bio- bioi birb biri birk biro birr bobb bobi bobo boi- boii boji bojo boki boko boob book boor bor- bori borj bork boro borr brik brio brkb brob brok broo bror brrr ibri ibro iiii iiio iioi iioo ijji ijok ikki ikko ikoo ikri iobi ioii ioio ioko iooi iooo iori iri- irio irki irob irri j-ro jbob jibb jibi jiji jijk jiri jirk jiro jobo joik joio joji jojo jokb joki jook joor jork joro jrbr kbbb kbbi kbbk kbbo kbbr kbib kbij kbik kbio kbji kbjk kbkb kbkk kbko kbkr kbob kboi kbok kboo kbrb kbri kbrj kbrk kbro kibb kibi kibo kibr kiii kiik kiji kiki kikk kiko kikr kioi kiok kioo kirb kiri kirk kiro kirr kjbb kjbi kjbr kjik kjir kjjj kjjk kjjo kjjr kjkj kjkk kjoi kjoj kjok kjor kjrb kkbb kkbi kkbj kkbo kkbr kkik kkjb kkjk kkkj kkkk kkob kkoj kkoo kkor kkrb kkrk kkro kkrr kobb kobi kobk kobo kobr koii koir kojb koji kojo kokb koki kokk koko kokr koob kooi kook kooo koor korb kori kork koro korr krbb krbi krbk krbr krib krik krio krjb krjk krjo krki krkk krko krkr krob kroi krok kroo kror krrb krri krrk krro krrr obbo obkb oboi obok obor obri obro oiii oiko ojok okir okko okok okor okro oobi ooij ooji oooo orbb orbi orbo ori- orio orji orko oro- orok oror orri orro rbbb rbbr rib- ribo riji rijo riki rikk riri rob- robb robi robo roik roio roir roji rojo roki rokk roko rokr roob rooi rook roor rori rork roro rrrr