-ic a-a a-b a-c a-i aaa aab aac aai aao aas ab- aba abb abc abi abo abs ac- aca acb acc aci aco acs ai- aia aib aic aii aio ais aoa aob aoc aoi aoo aos as- asa asb asc asi aso ass baa bab bac bai bao bas bba bbb bbc bbi bbo bbs bca bcb bcc bci bco bcs bi- bia bib bic bii bio bis boa bob boc boi boo bos bsa bsb bsc bsi bso bss c-- caa cab cac cai cao cas cba cbb cbc cbi cbo cbs cca ccb ccc cci cco ccs ci- cia cib cic cii cio cis co- coa cob coc coi coo cos csa csb csc csi cso css ia- iaa iab iac iai iao ias iba ibb ibc ibi ibo ibs ica icb icc ici ico ics iia iib iic iii iio iis io- ioa iob ioc ioi ioo ios is- isa isb isc isi iso iss o-i oaa oab oac oai oao oas ob- oba obb obc obi obo obs oc- oca ocb occ oci oco ocs oia oib oic oii oio ois oo- ooa oob ooc ooi ooo oos os- osa osb osc osi oso oss saa sab sac sai sao sas sba sbb sbc sbi sbo sbs sca scb scc sci sco scs sia sib sic sii sio sis soa sob soc soi soo sos ss- ssa ssb ssc ssi sso sss

a-ii aaaa aaab aaac aaai aaas aaba aabb aabc aabi aaca aacb aacc aaci aaco aacs aaib aaic aaii aais aaoo aasa aasc aasi aass abaa abab abac abai abas abb- abba abbb abbi abbo abbs abca abcb abcc abci abcs abia abib abic abis aboa abob aboo abos abs- absa absi abss acaa acab acac acai acas acba acca accc acci acco accs aci- acia acic acis acoa acos acsa acsc acsi acss aiai aias aiba aibo aica aicc aics aiia aiib aiic aioc aioi aisa aisb aisi aiso aoba aoca aocs aoss asaa asab asac asai asao asas asba asbo asc- asca ascb ascc asci asco asia asic asii asio asis asob asoc asoi asos assa assc assi asso asss ba-i baaa baas baba babb babi babo babs bac- baca bacc baci baco bacs baia baib baic baio bais baos basa basc basi baso bass bbas bbbb bbbs bbci bcaa bcas bcbc bcbs bcca bccc bcci bccs bcia bcis bcos bcsa bcsc bcss biao bias biba bibb bibi bibo bibs bica bicc bici bico bics biis bio- bioc bioi bios bis- bisa bisc biso biss boab boac boai boas boba bobb bobi bobo bobs boca boco bocs boi- boii bois boob booc boos bosa bosc bosi boso boss bsaa bsac bsas bsci bscs bsic bsos bssc c-bo caaa caab caac caas caba cabi cabo cabs cac- caca cacc caci caco caia caib caic caio cais caoi caos casa casb casc casi caso cass cbac cbbc cbbs cbca cbcc cbcs cbia cbsa cbsc cbsi ccaa ccab ccac ccai ccas ccba ccbc ccca cccb cccc ccci cccs ccic ccii ccis ccob ccoc ccsa ccsi ccss ciaa ciao cias ciba cibc cibi cibo cica cicc cici cico cics ciia ciii ciis ciob cios cis- cisa cisc ciss coai coas coba cobb cobi cobo cobs coca coco coia cois coob coos cosa cosc cosi coso coss csaa csab csac csao csas cscb cscc csci csco cscs csia csib csio csis csob csos cssa iaaa iaac iaai iaas iaba iaca iacc iacs iaia iais iasa iasc iasi iaso ibac ibas ibca ibcs ibia ibis ibos ibsa ibss icaa icab icac icai icao icas icbc icbs icca iccb iccc icci icco iccs icis icoc icos icsa icsb icsc icsi icss iiac iias iica iiii iiio iiis iioi iioo iios iisc iisi ioba iobi ioci ioii ioio iooi iooo ioos ioso is-a isac isai isao isas isba isca iscc isci isco iscs isia isic isis iso- isoc isos issa issc issi isso isss oaic oais oasc oasi oass obai obas obba obbo obia obis oboi obos obss ocab ocac ocas ocbc occa occc occi ocis ocos ocsa oiba oici oiii oios oisc ooaa ooba oobi ooia oooo ooos oosa oosi osai osas osba osca oscc osci osco osia osii osis osoi osoo osos ossa ossb ossi osso s-ib s-ic s-ii s-os sa-c saab saac saas saba sabb sabc sabi sabo sabs saca sacc saci saco sacs saia saic sais saoi saos sasa sasc sasi saso sass sbaa sbac sbai sbas sbbs sbca sbcc sbcs sbia sbic sbsa sbsi scaa scab scac scai scas scba scbi sccc sccs sci- scia scic scio scis scob scoo scsa scsc scsi scso siaa siab siac siai sias siba sibc sibi sibo sibs sica sicc sici sico sics sios sisa sisc sisi siss soas soba sobo sobs soca soci soco socs soia soic sois soos sosa sosi soso soss ssaa ssab ssac ssao ssas ssca sscc ssci sscs ssis ssoc sssa sssb sssc sssi ssss

-aaa- a-iii aaaai aaaas aaais aaaoc aaasa aaass aabaa aabba aacbc aacos aacsa aacsb aacss aaiib aasai aasia abaab ababa ababs abaca abaci abaco abacs abaia abasa abasi abass abbac abbai abbas abbia abbos abcas abccc abias abibs abici abio- abiss aboab abobo aboso absis acaca acacb acass accas accia accio acics acioa acoss acsis acsoi aiaia aiboa aibos aicas aisai aissa aisso aoos as-is asaba asabc asaco asaia asaic asaio asasa asbca asbis asbos ascao asci- ascii asco- asiab asias asics asios asobi asocs asosa assab assac assai assas assia assio assis assoa assoc assos b-cas babai babas babbs babia babic babio baboo babos bacab bacao bacas bacca bacci bacco bacia bacos baiao baiba baici baioc baisa baisi baiso basab basai basca basci basco basi- basia basic basis baso- bassa bassi basso bbiab biasi bibas bibbo bibbs bibia bibic bibio bibis bibos bicas bicsi bioci bioco bioss bisas bisca bisco bissa bo-bo boaco bobac bobbi boboc bobos bocac bocao bocas bocca bocci bocoa bocsa boiai boica boios booba boobs booco boosa bosas bosco boscs bosia bosio