-er a-a a-b a-c a-t aaa aab aac aae aaj aak aam aao aar aat ab- aba abb abc abe abj abk abm abo abr abt ac- aca acb acc ace acj ack acm aco acr act aea aeb aec aee aej aek aem aeo aer aet aja ajb ajc aje ajj ajk ajm ajo ajr ajt aka akb akc ake akj akk akm ako akr ama amb amc ame amk amm amo amr amt aoa aob aoc aoe aoj aok aom aoo aor aot ar- ara arb arc are arj ark arm aro arr art at- ata atb atc ate atm ato atr att baa bab bac bae baj bak bam bao bar bat bba bbb bbc bbe bbk bbm bbo bbr bbt bca bcb bcc bce bcj bck bcm bco bcr bct be- bea beb bec bee bek bem beo ber bet bja bjc bjj bjk bjm bjr bjt bka bkb bkc bke bkk bkm bko bkr bkt bma bmb bmc bme bmj bmk bmm bmo bmr bmt boa bob boc boe boj bok bom boo bor bot bra brb bre brj brk brm bro brr brt bta btb btc bte btk btm bto btr btt c-- c-j caa cab cac cae caj cak cam cao car cat cba cbb cbc cbe cbj cbk cbm cbo cbr cbt cca ccb ccc cce ccj cck ccm cco ccr cct ce- cea ceb cec cee cej cek cem ceo cer cet cja cjb cjc cjk cjr cka ckb ckc ckm cko ckt cma cmb cmc cme cmj cmk cmm cmo cmr cmt co- coa cob coc coe coj cok com coo cor cot cra crb crc cre crj crk crm cro crr crt cta ctb ctc cte ctk ctm cto ctr ctt eaa eab eac eae eaj eak eam eao ear eat eba ebb ebc ebe ebj ebk ebm ebo ebr ebt ec- eca ecb ecc ece ecj eck ecm eco ecr ect eea eeb eec eee eek eem eeo eer eet eja ejc ejo ejt eka ekb ekc eke eko ekr ekt em- ema emb emc eme emk emm emo emr emt eo- eoa eob eoc eoe eok eom eoo eor eot era erb erc ere erk erm ero err ert eta etb etc ete etj etk etm eto etr ett jaa jab jac jae jaj jak jam jao jar jat jba jbc jbj jbk jbm jbo jbr jbt jca jcb jcc jce jck jcm jco jcr jct jea jeb jec jee jej jek jem jeo jer jet jja jjb jjc jjj jjk jjr jka jkb jkk jkm jko jkr jkt jma jmb jmc jme jmj jmm jmo jmr jmt joa job joc joe joj jok jom joo jor jot jra jrb jrc jrk jrm jro jrr jrt jta jtb jtc jte jtk jtm jtr jtt k-t ka- kaa kab kac kae kaj kak kam kao kar kat kba kbb kbc kbe kbk kbm kbo kbr kca kcb kcc kce kck kcm kcr kct ke- kea keb kec kee kek kem keo ker ket kjb kjc kje kjr kkb kkc kke kkk kkm kkr kkt kma kmb kmc kme kmj kmk kmm kmo kmt koa kob koc koe kok kom koo kor kot kra krc krk kro krr krt kta ktb ktc kte ktj ktk ktm kto ktr ktt m-o m-r maa mab mac mae maj mak mam mao mar mat mba mbb mbc mbe mbj mbk mbm mbo mbr mbt mc- mca mcb mcc mce mck mcm mco mcr mct mea meb mec mee mej mek mem meo mer met mjb mjc mje mjj mjk mjm mjr mjt mka mkb mkc mke mkk mkm mko mkr mkt mma mmb mmc mme mmj mmk mmm mmo mmr mmt moa mob moc moe mok mom moo mor mot mra mrb mrc mre mrj mrk mrm mro mrr mrt mta mtb mtc mte mtj mtk mtm mto mtr mtt oaa oab oac oae oaj oak oam oao oar oat ob- oba obb obc obe obj obk obm obo obr obt oc- oca ocb occ ocj ock ocm oco ocr oct oea oeb oec oee oem oeo oer oet oja ojb ojc oje ojm ojo oka okb okc oke okj okk oko okr om- oma omb omc ome omj omm omo omr omt oo- ooa oob ooc ook oom ooo oor oot or- ora orb orc ore ork orm oro orr ort ot- ota otb otc ote otk otm oto otr ott ra- raa rab rac rae raj rak ram rao rar rat rba rbb rbc rbe rbk rbm rbo rbr rbt rca rcb rcc rce rcj rcm rco rcr rct re- rea reb rec ree rek rem reo rer ret rja rjc rjk rjm rjr rkb rkc rke rkk rkm rko rkt rma rmb rmc rme rmm rmo rmr rmt roa rob roc roe roj rok rom roo ror rot rra rrb rrc rrk rrm rrr rrt rta rtb rtc rte rtj rtk rtm rto rtr rtt taa tab tac tae taj tak tam tao tar tat tba tbb tbc tbe tbj tbk tbm tbo tbr tbt tca tcb tcc tce tcj tck tcm tco tcr tct te- tea teb tec tee tej tek tem teo ter tet tjc tje tjm tjo tjr tka tkb tkc tke tkk tkm tko tkr tkt tma tmb tmc tme tmj tmk tmm tmo tmr tmt to- toa tob toc toe toj tok tom too tor tot tra trb trc tre trk trm tro trr trt tta ttb ttc tte ttk ttm tto ttr ttt

a-ak a-be a-ok aaaa aaab aaac aaae aaam aaar aaba aabb aabc aabm aabt aaca aacb aacc aace aack aacm aaco aacr aact aaea aaec aaem aaka aake aama aamb aamc aame aamo aamr aaoe aaoo aara aarc aare aarm aaro aart aata aatc aatk aatt abaa abab abac abae abaj abak abam abar abat abb- abba abbb abbe abbo abbr abbt abca abcb abcc abcr abct abec abee aber abet abma abmb abmc abmt aboa abob abok aboo abor