-er a-a a-c a-t aaa aac aae aaf aag aan aao aap aar aas aat ac- aca acc ace acf acg acn aco acp acr acs act aea aec aee aef aeg aen aeo aep aer aes aet af- afa afc afe aff afg afn afo afp afr afs aft ag- aga agc age agf agg agn ago agp agr ags agt an- ana anc ane anf ang ann ano anp anr ans ant aoa aoc aoe aof aog aon aoo aop aor aos aot ap- apa apc ape apf apg apn apo app apr aps apt ar- ara arc are arf arg arn aro arp arr ars art as- asa asc ase asf asg asn aso asp asr ass ast at- ata atc ate atf atg atn ato atp atr ats att c-- caa cac cae caf cag can cao cap car cas cat cca ccc cce ccf ccg ccn cco ccp ccr ccs cct ce- cea cec cee cef ceg cen ceo cep cer ces cet cfa cfc cfe cff cfg cfn cfo cfp cfr cfs cft cga cgc cge cgg cgn cgo cgp cgr cgs cgt cn- cna cnc cne cnf cng cnn cno cnp cnr cns cnt co- coa coc coe cof cog con coo cop cor cos cot cpa cpc cpe cpf cpg cpn cpo cpp cpr cps cpt cra crc cre crf crg crn cro crp crr crs crt csa csc cse csf csg csn cso csp csr css cst cta ctc cte ctf ctg ctn cto ctp ctr cts ctt eaa eac eae eaf eag ean eao eap ear eas eat ec- eca ecc ece ecf ecg ecn eco ecr ecs ect eea eec eee eef eeg een eeo eep eer ees eet ef- efa efc efe eff efg efo efp efr efs eft ega egc ege egf egg egn ego egp egr egs egt en- ena enc ene enf eng enn eno enp enr ens ent eo- eoa eoc eoe eof eog eon eoo eop eor eos eot ep- epa epc epe epf epg epn epo epp epr eps ept era erc ere erf erg ern ero erp err ers ert es- esa esc ese esf esg esn eso esp esr ess est eta etc ete etf etg etn eto etp etr ets ett faa fac fae faf fag fan fao fap far fas fat fca fcc fce fcf fcg fcn fco fcp fcr fcs fct fea fec fee fef feg fen feo fep fer fes fet ffa ffc ffe fff ffg ffn ffo ffp ffr ffs fft fga fgc fge fgf fgg fgn fgp fgr fgs fgt fna fnc fne fnf fng fnn fnp fnr fns fnt foa foc foe fof fog fon foo fop for fos fot fpa fpc fpe fpg fpn fpo fpp fpr fps fpt fra frc fre frf frg frn fro frp frr frs frt fsa fsc fse fsf fsg fsn fso fsp fsr fss fst fta ftc fte ftf ftg ftn fto ftp ftr fts ftt g-p gaa gac gae gaf gag gan gao gap gar gas gat gca gcc gce gcf gcg gcn gco gcp gcr gcs gct ge- gea gec gee gef geg gen geo gep ger ges get gfa gfc gfe gff gfo gfp gfr gfs gft gga ggc ggg ggn ggo ggp ggr ggs ggt gna gnc gne gnf gnn gno gnp gnr gns gnt goa goc goe gof gog gon goo gop gor gos got gpa gpc gpe gpf gpg gpn gpo gpp gpr gps gpt gra grc gre grf grg grn gro grp grr grs grt gsa gsc gse gsf gsg gsn gso gsp gsr gss gst gta gtc gte gtf gtg gtn gto gtp gtr gts gtt naa nac nae naf nag nan nao nap nar nas nat nca ncc nce ncf ncg ncn nco ncp ncr ncs nct ne- nea nec nee nef neg nen neo nep ner nes net nfa nfc nfe nff nfn nfo nfp nfr nfs nft nga ngc nge ngf ngg ngn ngo ngp ngs ngt nna nnc nne nnf nng nnn nno nnp nns nnt no- noa noc noe nof nog non noo nop nor nos not npa npc npe npf npg npn npo npp npr nps npt nra nrc nre nrf nrg nrn nro nrp nrr nrs nrt nsa nsc nse nsf nsg nsn nso nsp nsr nss nst nta ntc nte ntf ntg ntn nto ntp ntr nts ntt oaa oac oae oaf oag oan oao oap oar oas oat oc- oca occ ocf ocg ocn oco ocp ocr ocs oct oea oec oee oef oeg oen oeo oep oer oes oet of- ofa ofc ofe off ofg ofn ofo ofp ofr ofs oft oga ogc oge ogf ogg ogn ogo ogp ogs ogt on- ona onc one onf ong onn ono onp onr ons ont oo- ooa ooc oof oog oon ooo oop oor oos oot op- opa opc ope opf opg opn opo opp opr ops opt or- ora orc ore orf org orn oro orp orr ors ort os- osa osc ose osf osg osn oso osp osr oss ost ot- ota otc ote otf otg otn oto otp otr ots ott p-p paa pac pae paf pag pan pao pap par pas pat pca pcc pce pcf pcg pcn pco pcp pcr pcs pct pea pec pee pef peg pen peo pep per pes pet pfa pfc pfe pff pfg pfn pfo pfp pfr pfs pft pga pgc pge pgf pgg pgn pgo pgp pgr pgs pgt pn- pna pnc pne pnf png pnn pno pnp pnr pns pnt poa poc poe pof pog pon poo pop por pos pot ppa ppc ppe ppf ppg ppn ppo ppp ppr pps ppt pra prc pre prf prg prn pro prp prr prs prt ps- psa psc pse psf psg psn pso psp psr pss pst pt- pta ptc pte ptf ptg ptn pto ptp ptr pts ptt ra- raa rac rae raf rag ran rao rap rar ras