-er a-a a-b a-c a-t aaa aab aac aae aak aam aao aar aas aat aaw ab- aba abb abc abe abk abm abo abr abs abt abw ac- aca acb acc ace ack acm aco acr acs act acw aea aeb aec aee aek aem aeo aer aes aet aew aka akb akc ake akk akm ako akr aks akw ama amb amc ame amk amm amo amr ams amt amw aoa aob aoc aoe aok aom aoo aor aos aot aow ar- ara arb arc are ark arm aro arr ars art arw as- asa asb asc ase ask asm aso asr ass ast asw at- ata atb atc ate atm ato atr ats att atw aw- awa awb awc awe awk awm awo awr aws awt aww baa bab bac bae bak bam bao bar bas bat baw bba bbb bbc bbe bbk bbm bbo bbr bbs bbt bbw bca bcb bcc bce bck bcm bco bcr bcs bct be- bea beb bec bee bek bem beo ber bes bet bew bka bkb bkc bke bkk bkm bko bkr bks bkt bkw bma bmb bmc bme bmk bmm bmo bmr bms bmt bmw boa bob boc boe bok bom boo bor bos bot bow bra brb bre brk brm bro brr brs brt brw bsa bsb bsc bse bsk bsm bso bsr bss bst bsw bta btb btc bte btk btm bto btr bts btt btw bwa bwb bwc bwk bwo bwr bws c-- caa cab cac cae cak cam cao car cas cat caw cba cbb cbc cbe cbk cbm cbo cbr cbs cbt cbw cca ccb ccc cce cck ccm cco ccr ccs cct ccw ce- cea ceb cec cee cek cem ceo cer ces cet cew cka ckb ckc ckm cko cks ckt ckw cma cmb cmc cme cmk cmm cmo cmr cms cmt cmw co- coa cob coc coe cok com coo cor cos cot cow cra crb crc cre crk crm cro crr crs crt crw csa csb csc cse csk csm cso csr css cst csw cta ctb ctc cte ctk ctm cto ctr cts ctt ctw cw- cwa cwb cwc cwe cwk cwm cwo cwr cws cwt eaa eab eac eae eak eam eao ear eas eat eaw eba ebb ebc ebe ebk ebm ebo ebr ebs ebt ebw ec- eca ecb ecc ece eck ecm eco ecr ecs ect ecw eea eeb eec eee eek eem eeo eer ees eet eew eka ekb ekc eke eko ekr eks ekt em- ema emb emc eme emk emm emo emr ems emt emw eo- eoa eob eoc eoe eok eom eoo eor eos eot eow era erb erc ere erk erm ero err ers ert erw es- esa esb esc ese esk esm eso esr ess est esw eta etb etc ete etk etm eto etr ets ett etw ewa ewb ewc ewe ewk ewm ewo ewr ews ewt eww k-t ka- kaa kab kac kae kak kam kao kar kas kat kaw kba kbb kbc kbe kbk kbm kbo kbr kbs kbw kca kcb kcc kce kck kcm kcr kcs kct ke- kea keb kec kee kek kem keo ker kes ket kew kkb kkc kke kkk kkm kkr kks kkt kma kmb kmc kme kmk kmm kmo kms kmt kmw koa kob koc koe kok kom koo kor kos kot kow kra krc krk kro krr krs krt krw ksa ksb ksc kse ksk ksm kso ksr kss kst ksw kta ktb ktc kte ktk ktm kto ktr kts ktt ktw kw- kwa kwc kwk kwm kwo kws kwt kww m-o m-r m-w maa mab mac mae mak mam mao mar mas mat maw mba mbb mbc mbe mbk mbm mbo mbr mbs mbt mbw mc- mca mcb mcc mce mck mcm mco mcr mcs mct mcw mea meb mec mee mek mem meo mer mes met mew mka mkb mkc mke mkk mkm mko mkr mks mkt mma mmb mmc mme mmk mmm mmo mmr mms mmt mmw moa mob moc moe mok mom moo mor mos mot mow mra mrb mrc mre mrk mrm mro mrr mrs mrt mrw msa msb msc mse msk msm mso msr mss mst msw mta mtb mtc mte mtk mtm mto mtr mts mtt mtw mwa mwb mwc mwe mwk mwm mwo mwr mws mww oaa oab oac oae oak oam oao oar oas oat oaw ob- oba obb obc obe obk obm obo obr obs obt obw oc- oca ocb occ ock ocm oco ocr ocs oct ocw oea oeb oec oee oem oeo oer oes oet oka okb okc oke okk oko okr oks okw om- oma omb omc ome omm omo omr oms omt omw oo- ooa oob ooc ook oom ooo oor oos oot oow or- ora orb orc ore ork orm oro orr ors ort os- osa osb osc ose osk osm oso osr oss ost osw ot- ota otb otc ote otk otm oto otr ots ott otw owa owb owc owe owk owm owo ows owt oww ra- raa rab rac rae rak ram rao rar ras rat raw rba rbb rbc rbe rbk rbm rbo rbr rbs rbt rbw rca rcb rcc rce rcm rco rcr rcs rct rcw re- rea reb rec ree rek rem reo rer res ret rew rkb rkc rke rkk rkm rko rks rkt rma rmb rmc rme rmm rmo rmr rms rmt roa rob roc roe rok rom roo ror ros rot row rra rrb rrc rrk rrm rrr rrs rrt rsa rsb rsc rse rsk rsm rso rsr rss rst rsw rta rtb rtc rte rtk rtm rto rtr rts rtt rtw rwa rwb rwc rwe rwm rwr rws saa sab sac sae sak sam sao sar sas sat saw sba sbb sbc sbe sbk sbm sbo sbr sbs sbt sbw sca scb scc sce sck scm sco scr scs sct scw se- sea seb sec see sek sem seo ser ses set sew sk- ska