a-ii aaaa aaab aaai aaar aaba aabb aabi aaib aaii aaoo aara aari aaro abaa abab abai abaj abar abb- abba abbb abbi abbo abbr abia abib abir aboa abob aboo abor abra abri abro aiai aiba aibo aiia aiib aiir aija aioi aira airi airo ajab ajao ajar ajba ajio ajob ajoo ajri aoba aora aorb arab arai arar arba arbi aria arib arii arij ario arja arjo aroa arob aroi aroo aror arr- arra arri arro arrr ba-i baaa baar baba babb babi babo babr baia baib baio bair baja baji bar- bara barb bari baro barr bbbb biaj biao biar biba bibb bibi bibo bija biji bio- bioi bira birb biri biro birr bjoa boab boai boar boba bobb bobi bobo boi- boii boji bojo boob boor bor- bora bori borj boro borr brab brai braj brao bria brio broa brob broo bror brrr iaaa iaai iaba iaia iara ibar ibia ibra ibri ibro iiii iiio iioi iioo iira ijji ioba iobi ioii ioio iooi iooo iora iori irai iraj irao irar iri- iria irio irob irra irri j-ro jaar jaba jabi jabo jabr jair jaja jaji jara jari jaro jarr jbaa jbar jbob jiao jibb jibi jiji jira jiri jiro jjar joab joao joar joba jobo joia joio joji jojo joor jora joro jrbr oara obai obba obbo obia obja oboi obor obra obri obro oiaj oiba oiii oira ojai ooaa ooba oobi ooia ooij ooji oooo oora orab orai orao orar orba orbb orbi orbo ori- oria orio orji oro- oror orra orri orro raab raaj raba rabb rabi rabo raia raii rair raja raji rajo raob rara rarb rari raro rbbb rbbr riaa riab riai rib- riba ribo riia riji rijo riri roab roar rob- roba robb robi robo roia roio roir roja roji rojo roob rooi roor rora rori roro rrrr