-ic a-a a-b a-c a-i aaa aab aac aai aao aar aas aau ab- aba abb abc abi abo abr abs abu ac- aca acb acc aci aco acr acs acu ai- aia aib aic aii aio air ais aiu aoa aob aoc aoi aoo aor aos aou ar- ara arb arc ari aro arr ars aru as- asa asb asc asi aso asr ass asu au- aua aub auc aui auo aur aus b-u baa bab bac bai bao bar bas bau bba bbb bbc bbi bbo bbr bbs bbu bca bcb bcc bci bco bcr bcs bcu bi- bia bib bic bii bio bir bis biu boa bob boc boi boo bor bos bou bra brb bri bro brr brs bru bsa bsb bsc bsi bso bsr bss bsu bua bub buc bui buo bur bus buu c-- caa cab cac cai cao car cas cau cba cbb cbc cbi cbo cbr cbs cbu cca ccb ccc cci cco ccr ccs ccu ci- cia cib cic cii cio cir cis ciu co- coa cob coc coi coo cor cos cou cra crb crc cri cro crr crs cru csa csb csc csi cso csr css csu cua cub cuc cui cuo cur cus cuu ia- iaa iab iac iai iao iar ias iau iba ibb ibc ibi ibo ibr ibs ibu ica icb icc ici ico icr ics icu iia iib iic iii iio iir iis iiu io- ioa iob ioc ioi ioo ior ios iou ir- ira irb irc iri iro irr irs iru is- isa isb isc isi iso isr iss isu iu- iua iub iuc iui iur ius o-i oaa oab oac oai oao oar oas oau ob- oba obb obc obi obo obr obs obu oc- oca ocb occ oci oco ocr ocs ocu oia oib oic oii oio oir ois oiu oo- ooa oob ooc ooi ooo oor oos or- ora orb orc ori oro orr ors oru os- osa osb osc osi oso osr oss osu ou- oua ouc oui ouo our ous ra- raa rab rac rai rao rar ras rau rba rbb rbc rbi rbo rbr rbs rbu rca rcb rcc rci rco rcr rcs rcu ria rib ric rii rio rir ris roa rob roc roi roo ror ros rou rra rrb rrc rri rrr rrs rru rsa rsb rsc rsi rso rsr rss rsu rua rub ruc rui ruo rur rus ruu saa sab sac sai sao sar sas sau sba sbb sbc sbi sbo sbr sbs sbu sca scb scc sci sco scr scs scu sia sib sic sii sio sir sis siu soa sob soc soi soo sor sos sou sr- sra srb src sri sro srr srs ss- ssa ssb ssc ssi sso ssr sss ssu sua sub suc sui suo sur sus suu ua- uaa uab uac uai uao uar uas uau uba ubb ubc ubi ubo ubr ubs ubu uca ucb ucc uci uco ucr ucs ucu uia uib uic uii uio uir uis uiu uoa uob uoc uoo uor uos ur- ura urb urc uri uro urr urs uru usa usb usc usi uso usr uss usu uua uuc uur uus uuu

-ous a-ii aaaa aaab aaac aaai aaar aaas aaba aabb aabc aabi aaca aacb aacc aaci aaco aacr aacs aacu aaib aaic aaii aais aaoo aara aarc aari aaro aars aaru aasa aasc aasi aass aasu aaus abaa abab abac abai abar abas abau abb- abba abbb abbi abbo abbr abbs abca abcb abcc abci abcr abcs abia abib abic abir abis abiu aboa abob aboo abor abos abou abra abrc abri abro abrs abs- absa absi abss absu abua abus acaa acab acac acai acar acas acba acca accc acci acco accs accu aci- acia acic acir acis acoa acor acos acou acr- acra acrc acri acro acrr acrs acsa acsc acsi acss acu- acuo acur acus aiai aias aiba aibo aica aicc aicr aics aiia aiib aiic aiir aioc aioi aira airi airo airs aisa aisb aisi aiso aisr aiui aoba aoca aocs aora aorb aors aoss aous arab arac arai arar aras arau arba arbi arbs arc- arca arci arco arcs aria arib arii ario aris aroa arob aroi aroo aror aros arr- arra arrc arri arro arrr arrs arru ars- arsa arsc arsi arso arsu arua arub arui asaa asab asac asai asao asar asas asau asba asbo asbu asc- asca ascb ascc asci asco ascr asia asic asii asio asir asis asob asoc asoi asor asos asou asra asrc asro asrs asru assa assc assi asso assr asss assu asub asui asur asus auaa auca auci auis aur- aura auri auro ausa ausu ba-i baaa baar baas baba babb babi babo babr babs babu bac- baca bacc baci baco bacs baia baib baic baio bair bais baos bar- bara barb barc bari baro barr bars baru basa basc basi baso bass basu bau- baur bbas bbau bbbb bbbs bbci bbrc bcaa bcar bcas bcbc bcbs bcca bccc bcci bccs bcia bcis bcor bcos bcra bcrs bcru bcsa bcsc bcss bcuc biao biar bias biba bibb bibi bibo bibs bica bicc bici bico bics biis bio- bioc bioi bios biou bira birb biri biro birr birs biru bis- bisa bisc biso biss bisu boab boac boai boar boas boba bobb bobi bobo bobs bobu boca boco bocs bocu boi- boii bois boiu boob booc boor boos bor- bora bori boro borr bors boru bosa bosc bosi boso boss bosu boua bour bous brab brac brai brao bras brau brca brcb bria bric brio bris broa brob broc broo bror bros brou brrr brrs brsb brsr bruc brus bsaa bsac bsas bsci bscs bsic bsos bsra bssc buar buba bubb bubi bubo bubs bubu buca bucc buci buco bucs bucu buic buir buis buiu bur- bura burb buri buro burr burs buru busa busc busi buss busu buus c-bo caaa caab caac caas caba cabi cabo cabs cabu cac- caca cacc caci caco cacr caia caib caic