a-ii aaaa aaab aaac aaai aaal aaas aaba aabb aabc aabi aabl aaca aacb aacc aaci aacl aacs aaib aaic aaii aais aala aalc aali aall aals aasa aasc aasi aass abaa abab abac abai abal abas abb- abba abbb abbi abbs abca abcb abcc abci abcl abcs abia abib abic abil abis abla abls abs- absa absi absl abss acaa acab acac acai acas acba acbl acca accc acci accs aci- acia acic acis acla aclc acli acls acsa acsc acsi acsl acss aiai aias aiba aibl aica aicc aics aiia aiib aiic aila aili ails aisa aisb aisi aisl alaa alac alai alal alas alb- alba albc albi albs alca alcc alcs ali- alia alib alii alil alis all- alla alli alll alls alsa alsc asaa asab asac asai asal asas asba asc- asca ascb ascc asci ascl asia asic asii asil asis asla asli assa assc assi assl asss ba-i baaa baal baas baba babb babi babs bac- baca bacc baci bacs baia baib baic bail bais bala balc bali ball bals basa basc basi bass bbas bbbb bbbs bbci bblb bbls bcaa bcas bcbc bcbs bcca bccc bcci bccl bccs bcia bcis bcsa bcsc bcsl bcss bial bias biba bibb bibi bibl bibs bica bicc bici bics biis bila bili bill bils bis- bisa bisc bisl biss blaa blab blac blas blic blis blls blss bsaa bsac bsas bsci bscs bsic bslc bssc caaa caab caac caal caas caba cabi cabs cac- caca cacc caci caia caib caic cail cais cala calc cali call cals casa casb casc casi casl cass cbac cbal cbbc cbbs cbca cbcc cbcl cbcs cbia cblb cblc cbsa cbsc cbsi ccaa ccab ccac ccai ccas ccba ccbc ccca cccb cccc ccci cccl cccs ccic ccii ccil ccis ccla cclc ccli ccls ccsa ccsi ccsl ccss ciaa cial cias ciba cibc cibi cica cicc cici cics ciia ciii ciis cila cili cill cils cis- cisa cisc cisl ciss clab clai clas clib clic clii clis clsa clsc csaa csab csac csas cscb cscc csci cscl cscs csia csib csis csla cssa iaaa iaac iaai iaal iaas iaba iaca iacc iacs iaia iais iala iall ials iasa iasc iasi ibac ibas ibca ibcs ibia ibis ibsa ibss icaa icab icac icai ical icas icbc icbs icca iccb iccc icci iccl iccs icis icll icsa icsb icsc icsi icss iiac iias iica iiii iiis iila iisc iisi ilac ilal ilas ilbc ilca ilia ilic ilis ill- illa illi ills ilsa is-a isac isai isal isas isba isbl isca iscc isci iscs isia isic isil isis isla isls issa issc issi isss laaa laac laal laas laba labi labs laca lacc laci lacl lacs laia laic lail lais lala lali lall lasa lasi lass lbcc lbia lbsc lcac lcbc lcca lccc lccs lcia lcis lcls lcsc liac lias liba libc libs lica lics liia liii liis lila lilb lili lill lils lisa lisi liss llbs llcc llcs lllc llll lscb lscs lsla lssa s-ib s-ic s-ii sa-c saab saac saal saas saba sabb sabc sabi sabs saca sacc saci sacs saia saic sail sais sala salc sali sall sals sasa sasc sasi sasl sass sbaa sbac sbai sbas sbbs sbca sbcc sbcs sbia sbic sbsa sbsi scaa scab scac scai scal scas scba scbi sccc sccl sccs sci- scia scic scil scis scl- sclc scls scsa scsc scsi scsl siaa siab siac siai sial sias siba sibc sibi sibs sica sicc sici sics sil- sila silc sili sill sils sisa sisc sisi siss sl-i slaa slab slac slai slas slcc slib slic slsa slsc ssaa ssab ssac ssas ssca sscc ssci sscs ssis ssla sslc sssa sssb sssc sssi ssss