a-ii aaaa aaab aaac aaai aaal aaba aabb aabc aabi aabl aaca aacb aacc aaci aacl aaco aaib aaic aaii aala aalc aali aall aalo aaoo abaa abab abac abai abal abb- abba abbb abbi abbo abca abcb abcc abci abcl abia abib abic abil abla ablo aboa abob abol aboo acaa acab acac acai acba acbl acca accc acci acco aci- acia acic acla aclc acli acoa acol aiai aiba aibl aibo aica aicc aiia aiib aiic aila aili aioc aioi alaa alac alai alal alao alb- alba albc albi albo alca alcc alco ali- alia alib alii alil alio all- alla alli alll allo aloa aloc aloi alol aloo aoba aoca aola ba-i baaa baal baba babb babi babo bac- baca bacc baci baco baia baib baic bail baio bala balc bali ball balo baol bbbb bbci bblb bcaa bcbc bcca bccc bcci bccl bcia bial biao biba bibb bibi bibl bibo bica bicc bici bico bila bili bill bilo bio- bioc bioi biol blaa blab blac blic blio blob bloc bloo boab boac boai boal boba bobb bobi bobo boca boco boi- boii boil bola boli boll bolo boob booc bool c-bo caaa caab caac caal caba cabi cabo cac- caca cacc caci caco caia caib caic cail caio cala calc cali call calo caoi caol cbac cbal cbbc cbca cbcc cbcl cbia cblb cblc cbol ccaa ccab ccac ccai ccba ccbc ccca cccb cccc ccci cccl ccic ccii ccil ccla cclc ccli ccob ccoc ciaa cial ciao ciba cibc cibi cibo cica cicc cici cico ciia ciii cila cili cill cilo ciob clab clai clib clic clii clio clob cloo coai coal coba cobb cobi cobo coca coco coia coil col- cola colb coli coll colo coob cool iaaa iaac iaai iaal iaba iaca iacc iaia iala iall ibac ibca ibia icaa icab icac icai ical icao icbc icca iccb iccc icci iccl icco icll icoc iiac iica iiii iiio iila iioi iioo ilac ilal ilbc ilca ilia ilic ilio ill- illa illi illo iloc iloo ioba iobi ioci ioii ioio iola iolo iooi iooo laaa laac laal laba labi labo laca lacc laci lacl laco laia laic lail lala lali lall lalo lbcc lbia lcac lcbc lcca lccc lcia liac liao liba libc libo lica lico liia liii lila lilb lili lill lilo lio- llao llcc lllc llll lloa lloc lloo loac lob- loba lobb lobi lobo loca locc loci loco loic lola loli loll lolo loob looc lool oaic oall obai obal obba obbo obia obla oboi obol ocab ocac ocal ocbc occa occc occi oclc oiba oici oiii oila olac olba olbo olca olcc olia olib olic olio olla olli ollo ooaa ooba oobi ooia oola oolo oooo