-er a-a a-c a-t aaa aac aad aae aag aan aao aap aar aas aat ac- aca acc acd ace acg acn aco acp acr acs act ad- ada adc add ade adg adn ado adp adr ads adt aea aec aed aee aeg aen aeo aep aer aes aet ag- aga agc agd age agg agn ago agp agr ags agt an- ana anc and ane ang ann ano anp anr ans ant aoa aoc aod aoe aog aon aoo aop aor aos aot ap- apa apc apd ape apg apn apo app apr aps apt ar- ara arc ard are arg arn aro arp arr ars art as- asa asc asd ase asg asn aso asp asr ass ast at- ata atc atd ate atg atn ato atp atr ats att c-- caa cac cad cae cag can cao cap car cas cat cca ccc ccd cce ccg ccn cco ccp ccr ccs cct cda cdc cdd cde cdg cdn cdo cdp cdr cds cdt ce- cea cec ced cee ceg cen ceo cep cer ces cet cga cgc cgd cge cgg cgn cgo cgp cgr cgs cgt cn- cna cnc cnd cne cng cnn cno cnp cnr cns cnt co- coa coc cod coe cog con coo cop cor cos cot cpa cpc cpd cpe cpg cpn cpo cpp cpr cps cpt cra crc crd cre crg crn cro crp crr crs crt csa csc csd cse csg csn cso csp csr css cst cta ctc ctd cte ctg ctn cto ctp ctr cts ctt daa dac dad dae dag dan dao dap dar das dat dca dcc dcd dce dcg dcn dco dcp dcr dcs dct dda ddc ddd dde ddg ddn ddo ddp ddr dds ddt de- dea dec ded dee deg den deo dep der des det dga dgc dgd dge dgg dgn dgp dgr dgs dgt dna dnc dnd dne dng dnn dno dnp dnr dns dnt doa doc dod doe dog don doo dop dor dos dot dpa dpc dpd dpe dpg dpn dpo dpp dpr dps dpt dra drc drd dre drg drn dro drp drr drs drt dsa dsc dsd dse dsg dsn dso dsp dsr dss dst dta dtc dtd dte dtg dtn dto dtp dtr dts dtt eaa eac ead eae eag ean eao eap ear eas eat ec- eca ecc ecd ece ecg ecn eco ecr ecs ect ed- eda edc edd ede edg edn edo edp edr eds edt eea eec eed eee eeg een eeo eep eer ees eet ega egc egd ege egg egn ego egp egr egs egt en- ena enc end ene eng enn eno enp enr ens ent eo- eoa eoc eod eoe eog eon eoo eop eor eos eot ep- epa epc epd epe epg epn epo epp epr eps ept era erc erd ere erg ern ero erp err ers ert es- esa esc esd ese esg esn eso esp esr ess est eta etc etd ete etg etn eto etp etr ets ett g-d g-p gaa gac gad gae gag gan gao gap gar gas gat gca gcc gcd gce gcg gcn gco gcp gcr gcs gct gda gdc gdd gde gdn gdo gdp gdr gds gdt ge- gea gec ged gee geg gen geo gep ger ges get gga ggc ggd ggg ggn ggo ggp ggr ggs ggt gna gnc gnd gne gnn gno gnp gnr gns gnt goa goc god goe gog gon goo gop gor gos got gpa gpc gpd gpe gpg gpn gpo gpp gpr gps gpt gra grc grd gre grg grn gro grp grr grs grt gsa gsc gsd gse gsg gsn gso gsp gsr gss gst gta gtc gtd gte gtg gtn gto gtp gtr gts gtt naa nac nad nae nag nan nao nap nar nas nat nca ncc ncd nce ncg ncn nco ncp ncr ncs nct nda ndc ndd nde ndg ndn ndo ndp ndr nds ndt ne- nea nec ned nee neg nen neo nep ner nes net nga ngc ngd nge ngg ngn ngo ngp ngs ngt nna nnc nne nng nnn nno nnp nns nnt no- noa noc nod noe nog non noo nop nor nos not npa npc npd npe npg npn npo npp npr nps npt nra nrc nrd nre nrg nrn nro nrp nrr nrs nrt nsa nsc nsd nse nsg nsn nso nsp nsr nss nst nta ntc ntd nte ntg ntn nto ntp ntr nts ntt oaa oac oad oae oag oan oao oap oar oas oat oc- oca occ ocd ocg ocn oco ocp ocr ocs oct oda odc odd ode odg odn odo odp odr ods odt oea oec oed oee oeg oen oeo oep oer oes oet oga ogc ogd oge ogg ogn ogo ogp ogs ogt on- ona onc ond one ong onn ono onp onr ons ont oo- ooa ooc ood oog oon ooo oop oor oos oot op- opa opc opd ope opg opn opo opp opr ops opt or- ora orc ord ore org orn oro orp orr ors ort os- osa osc osd ose osg osn oso osp osr oss ost ot- ota otc otd ote otg otn oto otp otr ots ott p-p paa pac pad pae pag pan pao pap par pas pat pca pcc pcd pce pcg pcn pco pcp pcr pcs pct pda pdc pdd pde pdg pdn pdo pdp pdr pds pdt pea pec ped pee peg pen peo pep per pes pet pga pgc pgd pge pgg pgn pgo pgp pgr pgs pgt pn- pna pnc pnd pne png pnn pno pnp pnr pns pnt poa poc pod poe pog pon poo pop por pos pot ppa ppc ppd ppe ppg ppn ppo ppp ppr pps ppt pra prc prd pre prg prn pro prp prr prs prt ps- psa psc psd pse psg psn pso psp psr pss pst pt- pta ptc ptd pte ptg ptn pto ptp ptr pts ptt ra- raa rac rad