-er a-a a-b a-t aaa aab aae aag aam aao aap aar aat ab- aba abb abe abg abm abo abp abr abt aea aeb aee aeg aem aeo aep aer aet ag- aga agb age agg agm ago agp agr agt ama amb ame amg amm amo amp amr amt aoa aob aoe aog aom aoo aop aor aot ap- apa apb ape apg apm apo app apr apt ar- ara arb are arg arm aro arp arr art at- ata atb ate atg atm ato atp atr att b-p baa bab bae bag bam bao bap bar bat bba bbb bbe bbg bbm bbo bbp bbr bbt be- bea beb bee beg bem beo bep ber bet bga bgb bge bgg bgm bgo bgp bgr bgt bma bmb bme bmg bmm bmo bmp bmr bmt boa bob boe bog bom boo bop bor bot bpa bpb bpe bpg bpm bpo bpp bpr bpt bra brb bre brg brm bro brp brr brt bta btb bte btg btm bto btp btr btt eaa eab eae eag eam eao eap ear eat eba ebb ebe ebg ebm ebo ebp ebr ebt eea eeb eee eeg eem eeo eep eer eet ega egb ege egg egm ego egp egr egt em- ema emb eme emg emm emo emp emr emt eo- eoa eob eoe eog eom eoo eop eor eot ep- epa epb epe epg epm epo epp epr ept era erb ere erg erm ero erp err ert eta etb ete etg etm eto etp etr ett g-p gaa gab gae gag gam gao gap gar gat gba gbe gbg gbm gbo gbp gbr gbt ge- gea geb gee geg gem geo gep ger get gga ggb ggg ggm ggo ggp ggr ggt gma gmb gme gmg gmm gmo gmp gmr gmt goa gob goe gog gom goo gop gor got gpa gpb gpe gpg gpm gpo gpp gpr gpt gra grb gre grg grm gro grp grr grt gta gtb gte gtg gtm gto gtp gtr gtt m-o m-r maa mab mae mag mam mao map mar mat mba mbb mbe mbg mbm mbo mbp mbr mbt mea meb mee meg mem meo mep mer met mga mgb mge mgm mgo mgp mgr mgt mma mmb mme mmg mmm mmo mmp mmr mmt moa mob moe mog mom moo mop mor mot mpa mpb mpe mpg mpm mpo mpp mpr mpt mra mrb mre mrg mrm mro mrp mrr mrt mta mtb mte mtg mtm mto mtp mtr mtt oaa oab oae oag oam oao oap oar oat ob- oba obb obe obg obm obo obp obr obt oea oeb oee oeg oem oeo oep oer oet oga oge ogg ogo ogp ogt om- oma omb ome omg omm omo omp omr omt oo- ooa oob oog oom ooo oop oor oot op- opa opb ope opg opm opo opp opr opt or- ora orb ore org orm oro orp orr ort ot- ota otb ote otg otm oto otp otr ott p-p paa pab pae pag pam pao pap par pat pba pbb pbe pbg pbm pbo pbp pbr pbt pea peb pee peg pem peo pep per pet pga pgb pge pgg pgm pgo pgp pgr pgt pma pmb pme pmg pmm pmo pmp pmr pmt poa pob poe pog pom poo pop por pot ppa ppb ppe ppg ppm ppo ppp ppr ppt pra prb pre prg prm pro prp prr prt pt- pta ptb pte ptg ptm pto ptp ptr ptt ra- raa rab rae rag ram rao rap rar rat rba rbb rbe rbg rbm rbo rbp rbr rbt re- rea reb ree reg rem reo rep rer ret rga rgb rge rgg rgo rgp rgr rgt rma rmb rme rmg rmm rmo rmp rmr rmt roa rob roe rog rom roo rop ror rot rpa rpb rpe rpg rpm rpo rpp rpr rpt rra rrb rrg rrm rrp rrr rrt rta rtb rte rtg rtm rto rtp rtr rtt taa tab tae tag tam tao tap tar tat tba tbb tbe tbg tbm tbo tbp tbr tbt te- tea teb tee teg tem teo tep ter tet tga tgb tge tgg tgm tgo tgp tgr tgt tma tmb tme tmg tmm tmo tmp tmr tmt to- toa tob toe tog tom too top tor tot tpa tpb tpe tpg tpm tpo tpp tpr tpt tra trb tre trg trm tro trp trr trt tta ttb tte ttg ttm tto ttp ttr ttt

a-be aaaa aaab aaae aaam aaap aaar aaba aabb aabm aabp aabt aaea aaem aaep aage aama aamb aame aamo aamp aamr aaoe aaoo aapa aapm aapo aapt aara aare aarm aaro aarp aart aata aatt abaa abab abae abag abam abap abar abat abb- abba abbb abbe abbo abbr abbt abee aber abet abma abmb abmt aboa abob aboo abor abot abpa abpm abpp abpr abra abro abta aeap aeer aega aemt aeom aer- aera aero aeta aeto aetr aett ag-o agag agam agao agap agar agat agba agbo agea agee agem agep ager aget agga agge agma agme agob agog agoo agot agra agre agro agrp agta agte agtr amaa amae amag amam amap amar amat amb- amba ambe ambo ambr amee amer amet amga amm- amma amme ammo amob amog amoo amor amot ampa ampe ampm ampo ampt amra amro amta amte amto amtp aoba aogm aoma aomg aopo aora aorb aort apam apao apap apar apat apba apbg apbr apea apeg apem apep aper apet apga apma apo- apoe apom apoo apop apor apot appa appr appt apra apre apro aprt apta apte aptt arab arae arag aram arap arar arat arba arbe area aree areg arem areo arep aret arga argb arge argo arma arme armm armo armt aroa arob aroe arom aroo aror arpa arpe arr- arra arre arrg arro arrr arrt arta arte arto artr at-t ataa atab atae atap atar atat atea atee atem ateo atep ater atgm atgo atm- atma atme atmo