-ic a-a a-b a-c a-i aaa aab aac aag aai aao aar aas aau ab- aba abb abc abg abi abo abr abs abu ac- aca acb acc acg aci aco acr acs acu ag- aga agb agc agg agi ago agr ags agu ai- aia aib aic aig aii aio air ais aiu aoa aob aoc aog aoi aoo aor aos aou ar- ara arb arc arg ari aro arr ars aru as- asa asb asc asg asi aso asr ass asu au- aua aub auc aug aui auo aur aus b-u baa bab bac bag bai bao bar bas bau bba bbb bbc bbg bbi bbo bbr bbs bbu bca bcb bcc bcg bci bco bcr bcs bcu bga bgb bgc bgg bgi bgo bgr bgs bgu bi- bia bib bic big bii bio bir bis biu boa bob boc bog boi boo bor bos bou bra brb brg bri bro brr brs bru bsa bsb bsc bsg bsi bso bsr bss bsu bua bub buc bug bui buo bur bus buu c-- caa cab cac cag cai cao car cas cau cba cbb cbc cbg cbi cbo cbr cbs cbu cca ccb ccc ccg cci cco ccr ccs ccu cga cgb cgc cgg cgi cgo cgr cgs cgu ci- cia cib cic cig cii cio cir cis ciu co- coa cob coc cog coi coo cor cos cou cra crb crc crg cri cro crr crs cru csa csb csc csg csi cso csr css csu cua cub cuc cug cui cuo cur cus cuu gaa gab gac gag gai gao gar gas gau gba gbc gbg gbi gbo gbr gbs gbu gca gcb gcc gcg gci gco gcr gcs gcu gga ggb ggc ggg ggi ggo ggr ggs ggu gia gib gic gig gii gio gir gis giu goa gob goc gog goi goo gor gos gou gra grb grc grg gri gro grr grs gru gsa gsb gsc gsg gsi gso gsr gss gsu gu- gua gub guc gug gui guo gur gus guu ia- iaa iab iac iag iai iao iar ias iau iba ibb ibc ibg ibi ibo ibr ibs ibu ica icb icc icg ici ico icr ics icu iga igb igc igg igi igo igr igs igu iia iib iic iii iio iir iis iiu io- ioa iob ioc iog ioi ioo ior ios iou ir- ira irb irc irg iri iro irr irs iru is- isa isb isc isg isi iso isr iss isu iu- iua iub iuc iug iui iur ius o-i oaa oab oac oag oai oao oar oas oau ob- oba obb obc obg obi obo obr obs obu oc- oca ocb occ ocg oci oco ocr ocs ocu oga ogc ogg ogi ogo ogs oia oib oic oii oio oir ois oiu oo- ooa oob ooc oog ooi ooo oor oos or- ora orb orc org ori oro orr ors oru os- osa osb osc osg osi oso osr oss osu ou- oua ouc oui ouo our ous ra- raa rab rac rag rai rao rar ras rau rba rbb rbc rbg rbi rbo rbr rbs rbu rca rcb rcc rcg rci rco rcr rcs rcu rga rgb rgc rgg rgi rgo rgr rgs ria rib ric rig rii rio rir ris roa rob roc rog roi roo ror ros rou rra rrb rrc rrg rri rrr rrs rru rsa rsb rsc rsg rsi rso rsr rss rsu rua rub ruc rug rui ruo rur rus ruu saa sab sac sag sai sao sar sas sau sba sbb sbc sbg sbi sbo sbr sbs sbu sca scb scc scg sci sco scr scs scu sga sgb sgc sgg sgi sgo sgr sgs sgu sia sib sic sig sii sio sir sis siu soa sob soc sog soi soo sor sos sou sr- sra srb src srg sri sro srr srs ss- ssa ssb ssc ssg ssi sso ssr sss ssu sua sub suc sug sui suo sur sus suu ua- uaa uab uac uag uai uao uar uas uau uba ubb ubc ubg ubi ubo ubr ubs ubu uca ucb ucc ucg uci uco ucr ucs ucu uga ugb ugc ugg ugi ugo ugr ugs ugu uia uib uic uig uii uio uir uis uiu uoa uob uoc uog uoo uor uos ur- ura urb urc urg uri uro urr urs uru usa usb usc usg usi uso usr uss usu uua uuc uug 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 abag abai abar abas abau abb- abba abbb abbi abbo abbr abbs abca abcb abcc abci abcr abcs abia abib abic abig abir abis abiu aboa abob aboo abor abos abou abra abrc abri abro abrs abs- absa absi abss absu abua abug abus acaa acab acac acag acai acar acas acba acca accc acci acco accs accu acga acgi acgr acgs aci- acia acic acir acis acoa acog acor acos acou acr- acra acrc acri acro acrr acrs acsa acsc acsi acss acu- acuo acur acus ag-o agac agag agai agao agar agas agau agba agbo agca agcc agco agga aggi aggu agia agib agic agig agii agio agir agis agob agog agoo agos agou agra agri agro agsa agsg agsu agua agui agur agus aiai aias aiba aibo aica aicc aicr aics aiga aigo aiia aiib aiic aiir aioc aioi aira airi airo airs aisa aisb aisg aisi aiso aisr aiui aoba aoca aocs aora aorb aors aoss aous arab arac arag arai arar aras arau arba arbi arbs arc- arca arci arco arcs arga argb argi argo args aria arib arig arii ario aris aroa arob aroi aroo aror aros arr- arra arrc arrg arri arro arrr arrs arru ars- arsa arsc arsi arso arsu arua arub arug arui asaa asab asac asag asai asao asar