-ic a-a a-b a-c a-i aaa aab aac aad aai aao aar aas ab- aba abb abc abd abi abo abr abs ac- aca acb acc acd aci aco acr acs ad- ada adb adc add adi ado adr ads ai- aia aib aic aid aii aio air ais aoa aob aoc aod aoi aoo aor aos ar- ara arb arc ard ari aro arr ars as- asa asb asc asd asi aso asr ass baa bab bac bad bai bao bar bas bba bbb bbc bbd bbi bbo bbr bbs bca bcb bcc bcd bci bco bcr bcs bda bdb bdc bdd bdi bdo bdr bds bi- bia bib bic bid bii bio bir bis boa bob boc bod boi boo bor bos bra brb brd bri bro brr brs bsa bsb bsc bsd bsi bso bsr bss c-- caa cab cac cad cai cao car cas cba cbb cbc cbd cbi cbo cbr cbs cca ccb ccc ccd cci cco ccr ccs cda cdb cdc cdd cdi cdo cdr cds ci- cia cib cic cid cii cio cir cis co- coa cob coc cod coi coo cor cos cra crb crc crd cri cro crr crs csa csb csc csd csi cso csr css daa dab dac dad dai dao dar das dba dbb dbc dbd dbi dbo dbr dbs dca dcb dcc dcd dci dco dcr dcs dda ddb ddc ddd ddi ddo ddr dds di- dia dib dic did dii dio dir dis doa dob doc dod doi doo dor dos dra drb drc drd dri dro drr drs dsa dsb dsc dsd dsi dso dsr dss i-d ia- iaa iab iac iad iai iao iar ias iba ibb ibc ibd ibi ibo ibr ibs ica icb icc icd ici ico icr ics ida idb idc idd idi ido idr ids iia iib iic iid iii iio iir iis io- ioa iob ioc iod ioi ioo ior ios ir- ira irb irc ird iri iro irr irs is- isa isb isc isd isi iso isr iss o-i oaa oab oac oad oai oao oar oas ob- oba obb obc obd obi obo obr obs oc- oca ocb occ ocd oci oco ocr ocs oda odb odc odd odi odo odr ods oia oib oic oid oii oio oir ois oo- ooa oob ooc ood ooi ooo oor oos or- ora orb orc ord ori oro orr ors os- osa osb osc osd osi oso osr oss ra- raa rab rac rad rai rao rar ras rba rbb rbc rbd rbi rbo rbr rbs rca rcb rcc rcd rci rco rcr rcs rda rdb rdc rdd rdi rdo rdr rds ria rib ric rid rii rio rir ris roa rob roc rod roi roo ror ros rra rrb rrc rrd rri rrr rrs rsa rsb rsc rsd rsi rso rsr rss saa sab sac sad sai sao sar sas sba sbb sbc sbd sbi sbo sbr sbs sca scb scc scd sci sco scr scs sda sdb sdc sdd sdi sdo sdr sds sia sib sic sid sii sio sir sis soa sob soc sod soi soo sor sos sr- sra srb src srd sri sro srr srs ss- ssa ssb ssc ssd ssi sso ssr sss

a-do a-ii aaaa aaab aaac aaad aaai aaar aaas aaba aabb aabc aabd aabi aaca aacb aacc aacd aaci aaco aacr aacs aada aadc aadi aads aaib aaic aaii aais aaoo aara aarc aard aari aaro aars aasa aasc aasd aasi aass abaa abab abac abad abai abar abas abb- abba abbb abbi abbo abbr abbs abca abcb abcc abcd abci abcr abcs abda abdi abdo abia abib abic abid abir abis aboa abob abod aboo abor abos abra abrc abri abro abrs abs- absa absd absi abss acaa acab acac acad acai acar acas acba acca accc accd acci acco accs acda acdb acdc acdi acds aci- acia acic acid acir acis acoa acod acor acos acr- acra acrc acri acro acrr acrs acsa acsc acsd acsi acss adaa adab adac adad adai adao adar adas adba adbc adbi adcc adci adcs adda addc addd addi addo addr adds adia adib adic adio adir adis adob adoc adod adoo ador ados adra adro adrs adsa adsi adso adsr adss aiai aias aiba aibo aica aicc aicd aicr aics aida aidb aidc aidi aidr aids aiia aiib aiic aiid aiir aioc aioi aira aird airi airo airs aisa aisb aisd aisi aiso aisr aoba aoca aocs aora aorb aors aosd aoss arab arac arad arai arar aras arba arbi arbs arc- arca arci arco arcs arda ardc ardi ardo ards aria arib arid arii ario aris aroa arob arod aroi aroo aror aros arr- arra arrc arri arro arrr arrs ars- arsa arsc arsd arsi arso asaa asab asac asad asai asao asar asas asba asbo asc- asca ascb ascc asci asco ascr asda asdo asds asia asic asii asio asir asis asob asoc asod asoi asor asos asra asrc asro asrs assa assc assd assi asso assr asss ba-i baaa baad baar baas baba babb babi babo babr babs bac- baca bacc baci baco bacs bada badb badd badi bado badr bads baia baib baic baid baio bair bais baos bar- bara barb barc bard bari baro barr bars basa basc basi baso bass bbad bbas bbbb bbbs bbci bbdd bbdo bbrc bcaa bcar bcas bcbc bcbs bcca bccc bcci bccs bcda bcds bcia bcis bcor bcos bcra bcrs bcsa bcsc bcss bd-r bdbc bddc bdii bdos bdsd biad biao biar bias biba bibb bibi bibo bibs bica bicc bici bico bics bida bidi bido bidr bids biis bio- bioc bioi bios bira birb bird biri biro birr birs bis- bisa bisc bisd biso biss boab boac boad boai boar boas boba bobb bobi bobo bobs boca boco bocs boda bodb bodi bodo bods boi- boid boii bois boob booc bood boor boos bor- bora bord bori boro borr bors bosa bosc bosi boso boss brab brac brad brai