bbbb bibb bibi bibo biji biko bio- bioi birb biri birk biro birr bivi bobb bobi bobo boi- boii boji bojo boki boko boob book boor bor- bori borj bork boro borr bovi bovo brik brio brkb brob brok broo bror brrr brvi ibri ibro iiii iiio iioi iioo ijji ijok ikki ikko ikoo ikri iobi ioii ioio ioko iooi iooo iori iri- irio irki irob irov irri ivbv ivor j-ro jbob jibb jibi jiji jijk jiri jirk jiro jobo joik joio joji jojo jokb joki jook joor jork joro jovi jovo jrbr kbbb kbbi kbbk kbbo kbbr kbib kbij kbik kbio kbji kbjk kbkb kbkk kbko kbkr kbkv kbob kboi kbok kboo kbov kbrb kbri kbrj kbrk kbro kbrv kbvb kbvo kbvr kibb kibi kibo kibr kiii kiik kiji kijv kiki kikk kiko kikr kioi kiok kioo kirb kiri kirk kiro kirr kirv kivi kjbb kjbi kjbr kjik kjir kjjj kjjk kjjo kjjr kjkj kjkk kjoi kjoj kjok kjor kjrb kjrv kjvv kkbb kkbi kkbj kkbo kkbr kkik kkjb kkjk kkkj kkkk kkob kkoj kkoo kkor kkov kkrb kkrk kkro kkrr kkrv kkvr kkvv kobb kobi kobk kobo kobr koii koir koiv kojb koji kojo kokb koki kokk koko kokr koob kooi kook kooo koor koov korb kori kork koro korr korv kovi kovk kovo kovr krbb krbi krbk krbr krib krik krio kriv krjb krjk krjo krki krkk krko krkr krkv krob kroi krok kroo kror krov krrb krri krrk krro krrr krvb krvi krvk krvo krvr krvv kvbr kvik kvir kviv kvob kvoi kvok kvoo kvor kvov kvri kvro kvrr kvrv kvvr kvvv obbo obkb oboi obok obor obri obro obvi oiii oiko ojok okir okko okok okor okro oobi ooij ooji oooo orbb orbi orbo ori- orio orji orko oro- orok oror orri orro orvr ovi- ovo- ovoo rbbb rbbr rib- ribo riji rijo riki rikk riri rivo rob- robb robi robo roik roio roir roji rojo roki rokk roko rokr roob rooi rook roor rori rork roro rovi rovo rrrr rvik viii viik viji viki viko virb viri virk viro virr vivi vivo vkor voio voir voor vor- vori voro vovk vrij vrio vvob vvvv