-er a-a a-b a-c aaa aab aac aad aae aak aao aar aas ab- aba abb abc abd abe abk abo abr abs ac- aca acb acc acd ace ack aco acr acs ad- ada adb adc add ade adk ado adr ads aea aeb aec aed aee aek aeo aer aes aka akb akc akd ake akk ako akr aks aoa aob aoc aod aoe aok aoo aor aos ar- ara arb arc ard are ark aro arr ars as- asa asb asc asd ase ask aso asr ass baa bab bac bad bae bak bao bar bas bba bbb bbc bbd bbe bbk bbo bbr bbs bca bcb bcc bcd bce bck bco bcr bcs bda bdb bdc bdd bde bdk bdo bdr bds be- bea beb bec bed bee bek beo ber bes bka bkb bkc bke bkk bko bkr bks boa bob boc bod boe bok boo bor bos bra brb brd bre brk bro brr brs bsa bsb bsc bsd bse bsk bso bsr bss c-- caa cab cac cad cae cak cao car cas cba cbb cbc cbd cbe cbk cbo cbr cbs cca ccb ccc ccd cce cck cco ccr ccs cda cdb cdc cdd cde cdk cdo cdr cds ce- cea ceb cec ced cee cek ceo cer ces cka ckb ckc ckd cko cks co- coa cob coc cod coe cok coo cor cos cra crb crc crd cre crk cro crr crs csa csb csc csd cse csk cso csr css daa dab dac dad dae dak dao dar das dba dbb dbc dbd dbe dbk dbo dbr dbs dca dcb dcc dcd dce dck dco dcr dcs dda ddb ddc ddd dde ddk ddo ddr dds de- dea deb dec ded dee dek deo der des dka dkb dkc dke dkk dko dkr dks doa dob doc dod doe dok doo dor dos dra drb drc drd dre drk dro drr drs dsa dsb dsc dsd dse dsk dso dsr dss eaa eab eac ead eae eak eao ear eas eba ebb ebc ebd ebe ebk ebo ebr ebs ec- eca ecb ecc ecd ece eck eco ecr ecs ed- eda edb edc edd ede edk edo edr eds eea eeb eec eed eee eek eeo eer ees eka ekb ekc ekd eke eko ekr eks eo- eoa eob eoc eod eoe eok eoo eor eos era erb erc erd ere erk ero err ers es- esa esb esc esd ese esk eso esr ess ka- kaa kab kac kad kae kak kao kar kas kba kbb kbc kbd kbe kbk kbo kbr kbs kca kcb kcc kcd kce kck kcr kcs kda kdb kdc kde kdk kdo kdr kds ke- kea keb kec ked kee kek keo ker kes kkb kkc kke kkk kkr kks koa kob koc kod koe kok koo kor kos kra krc krd krk kro krr krs ksa ksb ksc ksd kse ksk kso ksr kss oaa oab oac oad oae oak oao oar oas ob- oba obb obc obd obe obk obo obr obs oc- oca ocb occ ocd ock oco ocr ocs oda odb odc odd ode odo odr ods oea oeb oec oed oee oeo oer oes oka okb okc okd oke okk oko okr oks oo- ooa oob ooc ood ook ooo oor oos or- ora orb orc ord ore ork oro orr ors os- osa osb osc osd ose osk oso osr oss ra- raa rab rac rad rae rak rao rar ras rba rbb rbc rbd rbe rbk rbo rbr rbs rca rcb rcc rcd rce rco rcr rcs rda rdb rdc rdd rde rdo rdr rds re- rea reb rec red ree rek reo rer res rkb rkc rke rkk rko rks roa rob roc rod roe rok roo ror ros rra rrb rrc rrd rrk rrr rrs rsa rsb rsc rsd rse rsk rso rsr rss saa sab sac sad sae sak sao sar sas sba sbb sbc sbd sbe sbk sbo sbr sbs sca scb scc scd sce sck sco scr scs sda sdb sdc sdd sde sdk sdo sdr sds se- sea seb sec sed see sek seo ser ses sk- ska skb skc skd ske skk sko skr sks soa sob soc sod soe sok soo sor sos sr- sra srb src srd sre srk sro srr srs ss- ssa ssb ssc ssd sse ssk sso ssr sss

-ase -ose a-ak a-be a-do a-ok aaaa aaab aaac aaad aaae aaar aaas aaba aabb aabc aabd aaca aacb aacc aacd aace aack aaco aacr aacs aada aadc aade aads aaea aaec aaes aaka aake aaoe aaoo aara aarc aard aare aaro aars aasa aasc aasd aase aass abaa abab abac abad abae abak abar abas abb- abba abbb abbe abbo abbr abbs abca abcb abcc abcd abcr abcs abda abdo abec abed abee aber abes aboa abob abod abok aboo abor abos abra abrc abro abrs abs- absa absd abse abss acaa acab acac acad acae acar acas acba acca accc accd acce acco accs acda acdb acdc acde acds ace- acea acec aced acek acer aces ackd acke acks acoa acod acoe acor acos acr- acra acrc acre acro acrr acrs acsa acsc acsd acse acss adaa adab adac adad adae adak adao adar adas adba adbc adcc adcs adda addc addd adde addo addr adds adea adeb adee adeo ader ades adob adoc adod adoe adok adoo ador ados adra adre adro adrs adsa adso adsr adss aeac aeas aebs aecb aede aeer aeka aer- aera aerc aerd aero aers aesc aesd aess akaa akae akao akar akas akca aked akee aker akes akka akko akok akos akr- akra akre aksa aoba aoca aoce aocs aoks aora aorb aors aosd aoss arab arac arad arae arak arar aras arba arbe arbs arc- arca arce arco arcs arda ardc arde ardo ards area arec ared aree arek areo ares arka arke arko arks aroa arob arod aroe aroo aror aros arr- arra arrc