-er a-a a-b a-t aaa aab aad aae aag aan aao aap aar aas aat ab- aba abb abd abe abg abn abo abp abr abs abt ad- ada adb add ade adg adn ado adp adr ads adt aea aeb aed aee aeg aen aeo aep aer aes aet ag- aga agb agd age agg agn ago agp agr ags agt an- ana anb and ane ang ann ano anp anr ans ant aoa aob aod aoe aog aon aoo aop aor aos aot ap- apa apb apd ape apg apn apo app apr aps apt ar- ara arb ard are arg arn aro arp arr ars art as- asa asb asd ase asg asn aso asp asr ass ast at- ata atb atd ate atg atn ato atp atr ats att b-p baa bab bad bae bag ban bao bap bar bas bat bba bbb bbd bbe bbg bbn bbo bbp bbr bbs bbt bda bdb bdd bde bdg bdo bdp bdr bds bdt be- bea beb bed bee beg ben beo bep ber bes bet bga bgb bgd bge bgg bgn bgo bgp bgr bgs bgt bna bnb bnd bne bng bnn bno bnp bnr bns bnt boa bob bod boe bog bon boo bop bor bos bot bpa bpb bpd bpe bpg bpn bpo bpp bpr bps bpt bra brb brd bre brg brn bro brp brr brs brt bsa bsb bsd bse bsg bsn bso bsp bsr bss bst bta btb btd bte btg btn bto btp btr bts btt daa dab dad dae dag dan dao dap dar das dat dba dbb dbd dbe dbg dbn dbo dbp dbr dbs dbt dda ddb ddd dde ddg ddn ddo ddp ddr dds ddt de- dea deb ded dee deg den deo dep der des det dga dgd dge dgg dgn dgp dgr dgs dgt dna dnb dnd dne dng dnn dno dnp dnr dns dnt doa dob dod doe dog don doo dop dor dos dot dpa dpb dpd dpe dpg dpn dpo dpp dpr dps dpt dra drb drd dre drg drn dro drp drr drs drt dsa dsb dsd dse dsg dsn dso dsp dsr dss dst dta dtb dtd dte dtg dtn dto dtp dtr dts dtt eaa eab ead eae eag ean eao eap ear eas eat eba ebb ebd ebe ebg ebn ebo ebp ebr ebs ebt ed- eda edb edd ede edg edn edo edp edr eds edt eea eeb eed eee eeg een eeo eep eer ees eet ega egb egd ege egg egn ego egp egr egs egt en- ena enb end ene eng enn eno enp enr ens ent eo- eoa eob eod eoe eog eon eoo eop eor eos eot ep- epa epb epd epe epg epn epo epp epr eps ept era erb erd ere erg ern ero erp err ers ert es- esa esb esd ese esg esn eso esp esr ess est eta etb etd ete etg etn eto etp etr ets ett g-d g-p gaa gab gad gae gag gan gao gap gar gas gat gba gbd gbe gbg gbn gbo gbp gbr gbs gbt gda gdb gdd gde gdn gdo gdp gdr gds gdt ge- gea geb ged gee geg gen geo gep ger ges get gga ggb ggd ggg ggn ggo ggp ggr ggs ggt gna gnb gnd gne gnn gno gnp gnr gns gnt goa gob god goe gog gon goo gop gor gos got gpa gpb gpd gpe gpg gpn gpo gpp gpr gps gpt gra grb grd gre grg grn gro grp grr grs grt gsa gsb gsd gse gsg gsn gso gsp gsr gss gst gta gtb gtd gte gtg gtn gto gtp gtr gts gtt naa nab nad nae nag nan nao nap nar nas nat nba nbb nbd nbe nbg nbn nbo nbp nbr nbs nbt nda ndb ndd nde ndg ndn ndo ndp ndr nds ndt ne- nea neb ned nee neg nen neo nep ner nes net nga ngb ngd nge ngg ngn ngo ngp ngs ngt nna nnb nne nng nnn nno nnp nns nnt no- noa nob nod noe nog non noo nop nor nos not npa npb npd npe npg npn npo npp npr nps npt nra nrb nrd nre nrg nrn nro nrp nrr nrs nrt nsa nsb nsd nse nsg nsn nso nsp nsr nss nst nta ntb ntd nte ntg ntn nto ntp ntr nts ntt oaa oab oad oae oag oan oao oap oar oas oat ob- oba obb obd obe obg obn obo obp obr obs obt oda odb odd ode odg odn odo odp odr ods odt oea oeb oed oee oeg oen oeo oep oer oes oet oga ogd oge ogg ogn ogo ogp ogs ogt on- ona onb ond one ong onn ono onp onr ons ont oo- ooa oob ood oog oon ooo oop oor oos oot op- opa opb opd ope opg opn opo opp opr ops opt or- ora orb ord ore org orn oro orp orr ors ort os- osa osb osd ose osg osn oso osp osr oss ost ot- ota otb otd ote otg otn oto otp otr ots ott p-p paa pab pad pae pag pan pao pap par pas pat pba pbb pbd pbe pbg pbn pbo pbp pbr pbs pbt pda pdb pdd pde pdg pdn pdo pdp pdr pds pdt pea peb ped pee peg pen peo pep per pes pet pga pgb pgd pge pgg pgn pgo pgp pgr pgs pgt pn- pna pnb pnd pne png pnn pno pnp pnr pns pnt poa pob pod poe pog pon poo pop por pos pot ppa ppb ppd ppe ppg ppn ppo ppp ppr pps ppt pra prb prd pre prg prn pro prp prr prs prt ps- psa psb psd pse psg psn pso psp psr pss pst pt- pta ptb ptd pte ptg ptn pto ptp ptr pts ptt ra- raa rab rad rae rag ran rao rap