-er a-a a-b a-t aaa aab aad aae aag aao aap aar aas aat ab- aba abb abd abe abg abo abp abr abs abt ad- ada adb add ade adg ado adp adr ads adt aea aeb aed aee aeg aeo aep aer aes aet ag- aga agb agd age agg ago agp agr ags agt aoa aob aod aoe aog aoo aop aor aos aot ap- apa apb apd ape apg apo app apr aps apt ar- ara arb ard are arg aro arp arr ars art as- asa asb asd ase asg aso asp asr ass ast at- ata atb atd ate atg ato atp atr ats att b-p baa bab bad bae bag bao bap bar bas bat bba bbb bbd bbe bbg bbo bbp bbr bbs bbt bda bdb bdd bde bdg bdo bdp bdr bds bdt be- bea beb bed bee beg beo bep ber bes bet bga bgb bgd bge bgg bgo bgp bgr bgs bgt boa bob bod boe bog boo bop bor bos bot bpa bpb bpd bpe bpg bpo bpp bpr bps bpt bra brb brd bre brg bro brp brr brs brt bsa bsb bsd bse bsg bso bsp bsr bss bst bta btb btd bte btg bto btp btr bts btt daa dab dad dae dag dao dap dar das dat dba dbb dbd dbe dbg dbo dbp dbr dbs dbt dda ddb ddd dde ddg ddo ddp ddr dds ddt de- dea deb ded dee deg deo dep der des det dga dgd dge dgg dgp dgr dgs dgt doa dob dod doe dog doo dop dor dos dot dpa dpb dpd dpe dpg dpo dpp dpr dps dpt dra drb drd dre drg dro drp drr drs drt dsa dsb dsd dse dsg dso dsp dsr dss dst dta dtb dtd dte dtg dto dtp dtr dts dtt eaa eab ead eae eag eao eap ear eas eat eba ebb ebd ebe ebg ebo ebp ebr ebs ebt ed- eda edb edd ede edg edo edp edr eds edt eea eeb eed eee eeg eeo eep eer ees eet ega egb egd ege egg ego egp egr egs egt eo- eoa eob eod eoe eog eoo eop eor eos eot ep- epa epb epd epe epg epo epp epr eps ept era erb erd ere erg ero erp err ers ert es- esa esb esd ese esg eso esp esr ess est eta etb etd ete etg eto etp etr ets ett g-d g-p gaa gab gad gae gag gao gap gar gas gat gba gbd gbe gbg gbo gbp gbr gbs gbt gda gdb gdd gde gdo gdp gdr gds gdt ge- gea geb ged gee geg geo gep ger ges get gga ggb ggd ggg ggo ggp ggr ggs ggt goa gob god goe gog goo gop gor gos got gpa gpb gpd gpe gpg gpo gpp gpr gps gpt gra grb grd gre grg gro grp grr grs grt gsa gsb gsd gse gsg gso gsp gsr gss gst gta gtb gtd gte gtg gto gtp gtr gts gtt oaa oab oad oae oag oao oap oar oas oat ob- oba obb obd obe obg obo obp obr obs obt oda odb odd ode odg odo odp odr ods odt oea oeb oed oee oeg oeo oep oer oes oet oga ogd oge ogg ogo ogp ogs ogt oo- ooa oob ood oog ooo oop oor oos oot op- opa opb opd ope opg opo opp opr ops opt or- ora orb ord ore org oro orp orr ors ort os- osa osb osd ose osg oso osp osr oss ost ot- ota otb otd ote otg oto otp otr ots ott p-p paa pab pad pae pag pao pap par pas pat pba pbb pbd pbe pbg pbo pbp pbr pbs pbt pda pdb pdd pde pdg pdo pdp pdr pds pdt pea peb ped pee peg peo pep per pes pet pga pgb pgd pge pgg pgo pgp pgr pgs pgt poa pob pod poe pog poo pop por pos pot ppa ppb ppd ppe ppg ppo ppp ppr pps ppt pra prb prd pre prg pro prp prr prs prt ps- psa psb psd pse psg pso psp psr pss pst pt- pta ptb ptd pte ptg pto ptp ptr pts ptt ra- raa rab rad rae rag rao rap rar ras rat rba rbb rbd rbe rbg rbo rbp rbr rbs rbt rda rdb rdd rde rdg rdo rdp rdr rds rdt re- rea reb red ree reg reo rep rer res ret rga rgb rgd rge rgg rgo rgp rgr rgs rgt roa rob rod roe rog roo rop ror ros rot rpa rpb rpd rpe rpg rpo rpp rpr rps rpt rra rrb rrd rrg rrp rrr rrs rrt rsa rsb rsd rse rsg rso rsp rsr rss rst rta rtb rtd rte rtg rto rtp rtr rts rtt saa sab sad sae sag sao sap sar sas sat sba sbb sbd sbe sbg sbo sbp sbr sbs sbt sda sdb sdd sde sdg sdo sdp sdr sds sdt se- sea seb sed see seg seo sep ser ses set sga sgb sgd sge sgg sgo sgp sgr sgs sgt soa sob sod soe sog soo sop sor sos sot spa spb spd spe spg spo spp spr sps spt sr- sra srb srd sre srg sro srp srr srs srt ss- ssa ssb ssd sse ssg sso ssp ssr sss sst sta stb std ste stg sto stp str sts stt taa tab tad tae tag tao tap tar tas tat tba tbb tbd tbe tbg tbo tbp tbr tbs tbt tda tdb tdd tde tdg tdo tdp tdr tds tdt te- tea teb ted tee teg teo tep ter tes tet tga tgb tge tgg tgo tgp tgr tgs tgt to- toa tob tod toe tog too top tor tos tot tpa tpb tpd tpe tpg tpo tpp tpr tps tpt tra trb trd tre