-er a-a a-b a-c aaa aab aac aad aae aar aas aau ab- aba abb abc abd abe abr abs abu ac- aca acb acc acd ace acr acs acu ad- ada adb adc add ade adr ads adu aea aeb aec aed aee aer aes aeu ar- ara arb arc ard are arr ars aru as- asa asb asc asd ase asr ass asu au- aua aub auc aud aue aur aus b-u baa bab bac bad bae bar bas bau bba bbb bbc bbd bbe bbr bbs bbu bca bcb bcc bcd bce bcr bcs bcu bda bdb bdc bdd bde bdr bds bdu be- bea beb bec bed bee ber bes beu bra brb brd bre brr brs bru bsa bsb bsc bsd bse bsr bss bsu bua bub buc bud bue bur bus buu c-- caa cab cac cad cae car cas cau cba cbb cbc cbd cbe cbr cbs cbu cca ccb ccc ccd cce ccr ccs ccu cda cdb cdc cdd cde cdr cds cdu ce- cea ceb cec ced cee cer ces ceu cra crb crc crd cre crr crs cru csa csb csc csd cse csr css csu cua cub cuc cud cue cur cus cuu daa dab dac dad dae dar das dau dba dbb dbc dbd dbe dbr dbs dbu dca dcb dcc dcd dce dcr dcs dcu dda ddb ddc ddd dde ddr dds ddu de- dea deb dec ded dee der des deu dra drb drc drd dre drr drs dru dsa dsb dsc dsd dse dsr dss dsu dua dub duc dud due dur dus eaa eab eac ead eae ear eas eau eba ebb ebc ebd ebe ebr ebs ebu ec- eca ecb ecc ecd ece ecr ecs ecu ed- eda edb edc edd ede edr eds edu eea eeb eec eed eee eer ees era erb erc erd ere err ers eru es- esa esb esc esd ese esr ess esu eu- eua eub euc eud eue eur eus ra- raa rab rac rad rae rar ras rau rba rbb rbc rbd rbe rbr rbs rbu rca rcb rcc rcd rce rcr rcs rcu rda rdb rdc rdd rde rdr rds rdu re- rea reb rec red ree rer res reu rra rrb rrc rrd rrr rrs rru rsa rsb rsc rsd rse rsr rss rsu rua rub ruc rud rue rur rus ruu saa sab sac sad sae sar sas sau sba sbb sbc sbd sbe sbr sbs sbu sca scb scc scd sce scr scs scu sda sdb sdc sdd sde sdr sds sdu se- sea seb sec sed see ser ses seu sr- sra srb src srd sre srr srs ss- ssa ssb ssc ssd sse ssr sss ssu sua sub suc sud sue sur sus suu ua- uaa uab uac uad uae uar uas uau uba ubb ubc ube ubr ubs ubu uca ucb ucc ucd uce ucr ucs ucu uda udb udc udd ude udr uds udu uea ueb uec ued uee uer ues ur- ura urb urc urd ure urr urs uru usa usb usc usd use usr uss usu uua uuc uue uur uus uuu

-ase a-be aaaa aaab aaac aaad aaae aaar aaas aaba aabb aabc aabd aaca aacb aacc aacd aace aacr aacs aacu aada aadc aade aads aadu aaea aaec aaes aara aarc aard aare aars aaru aasa aasc aasd aase aass aasu aaus abaa abab abac abad abae abar abas abau abb- abba abbb abbe abbr abbs abca abcb abcc abcd abcr abcs abda abdu abec abed abee aber abes abra abrc abrs abs- absa absd abse abss absu abua abud abue abus acaa acab acac acad acae acar acas acba acca accc accd acce accs accu acda acdb acdc acde acds ace- acea acec aced acer aces acr- acra acrc acre acrr acrs acsa acsc acsd acse acss acu- acue acur acus adaa adab adac adad adae adar adas adba adbc adcc adcs adda addc addd adde addr adds addu adea adeb adee ader ades adra adre adrs adsa adsr adss adua adub adue adur aeac aeas aebs aecb aede aeer aer- aera aerc aerd aers aesc aesd aess arab arac arad arae arar aras arau arba arbe arbs arc- arca arce arcs arda ardc arde ards ardu area arec ared aree ares areu arr- arra arrc arre arrr arrs arru ars- arsa arsc arsd arse arsu arua arub arud arue asaa asab asac asad asae asar asas asau asba asbu asc- asca ascb ascc asce ascr asda asde asds asea asec asee aser ases asra asrc asrs asru assa assc assd asse assr asss assu asub asud asue asur asus auaa aube auca auce audc aude auer aur- aura aurd aure ausa ausd ause ausu baaa baad baar baas baba babb babe babr babs babu bac- baca bacc bace bacs bada badb badd bade badr bads badu baed baer baes bar- bara barb barc bard bare barr bars baru basa basc base bass basu bau- baud baur bbad bbas bbau bbbb bbbs bbdd bbeb bbrc bcaa bcar bcas bcbc bcbs bcca bccc bccs bcda bcde bcds bcec bcer bces bcra bcrs bcru bcsa bcsc bcss bcuc bd-r bdbc bddc bdes bdsd bead bear beas beau beba bebb bebe beca becs becu beda bede beds bedu beeb beed beer bees bera berc berd bere berr bers beru bes- besa bese bess beur brab brac brad brae bras brau brca brcb brce brda brds brea breb brec bred bree brer bres brrr brrs brsb brsr bruc brud brue brus bsaa bsac bsas bsbd bscs bsea bseb bsec bsed bsee bser bses bsra bsrd bssc bssd bsse buad buar buba bubb bube bubs bubu buca bucc buce bucs bucu buda budb budd bude buds budu buea buer bueu bur- bura burb burd bure burr burs buru busa busc buse buss busu buus c-cd caaa caab caac caas caba cabe cabs cabu cac- caca cacc cace cacr cada cadc cadd cade cadr cads cadu caec caer