-er a-a a-c a-t aaa aac aae aan aao aap aar aas aat ac- aca acc ace acn aco acp acr acs act aea aec aee aen aeo aep aer aes aet an- ana anc ane ann ano anp anr ans ant aoa aoc aoe aon aoo aop aor aos aot ap- apa apc ape apn apo app apr aps apt ar- ara arc are arn aro arp arr ars art as- asa asc ase asn aso asp asr ass ast at- ata atc ate atn ato atp atr ats att c-- caa cac cae can cao cap car cas cat cca ccc cce ccn cco ccp ccr ccs cct ce- cea cec cee cen ceo cep cer ces cet cn- cna cnc cne cnn cno cnp cnr cns cnt co- coa coc coe con coo cop cor cos cot cpa cpc cpe cpn cpo cpp cpr cps cpt cra crc cre crn cro crp crr crs crt csa csc cse csn cso csp csr css cst cta ctc cte ctn cto ctp ctr cts ctt eaa eac eae ean eao eap ear eas eat ec- eca ecc ece ecn eco ecr ecs ect eea eec eee een eeo eep eer ees eet en- ena enc ene enn eno enp enr ens ent eo- eoa eoc eoe eon eoo eop eor eos eot ep- epa epc epe epn epo epp epr eps ept era erc ere ern ero erp err ers ert es- esa esc ese esn eso esp esr ess est eta etc ete etn eto etp etr ets ett naa nac nae nan nao nap nar nas nat nca ncc nce ncn nco ncp ncr ncs nct ne- nea nec nee nen neo nep ner nes net nna nnc nne nnn nno nnp nns nnt no- noa noc noe non noo nop nor nos not npa npc npe npn npo npp npr nps npt nra nrc nre nrn nro nrp nrr nrs nrt nsa nsc nse nsn nso nsp nsr nss nst nta ntc nte ntn nto ntp ntr nts ntt oaa oac oae oan oao oap oar oas oat oc- oca occ ocn oco ocp ocr ocs oct oea oec oee oen oeo oep oer oes oet on- ona onc one onn ono onp onr ons ont oo- ooa ooc oon ooo oop oor oos oot op- opa opc ope opn opo opp opr ops opt or- ora orc ore orn oro orp orr ors ort os- osa osc ose osn oso osp osr oss ost ot- ota otc ote otn oto otp otr ots ott p-p paa pac pae pan pao pap par pas pat pca pcc pce pcn pco pcp pcr pcs pct pea pec pee pen peo pep per pes pet pn- pna pnc pne pnn pno pnp pnr pns pnt poa poc poe pon poo pop por pos pot ppa ppc ppe ppn ppo ppp ppr pps ppt pra prc pre prn pro prp prr prs prt ps- psa psc pse psn pso psp psr pss pst pt- pta ptc pte ptn pto ptp ptr pts ptt ra- raa rac rae ran rao rap rar ras rat rca rcc rce rcn rco rcp rcr rcs rct re- rea rec ree ren reo rep rer res ret rna rnc rnn rno rnp rnr rns rnt roa roc roe ron roo rop ror ros rot rpa rpc rpe rpn rpo rpp rpr rps rpt rra rrc rrn rrp rrr rrs rrt rsa rsc rse rsn rso rsp rsr rss rst rta rtc rte rtn rto rtp rtr rts rtt saa sac sae san sao sap sar sas sat sca scc sce scn sco scp scr scs sct se- sea sec see sen seo sep ser ses set sna snc sne snn sno snp snr sns snt soa soc soe son soo sop sor sos sot spa spc spe spn spo spp spr sps spt sr- sra src sre srn sro srp srr srs srt ss- ssa ssc sse ssn sso ssp ssr sss sst sta stc ste stn sto stp str sts stt taa tac tae tan tao tap tar tas tat tca tcc tce tcn tco tcp tcr tcs tct te- tea tec tee ten teo tep ter tes tet tna tnc tne tnn tno tnp tnr tns tnt to- toa toc toe ton too top tor tos tot tpa tpc tpe tpn tpo tpp tpr tps tpt tra trc tre trn tro trp trr trs trt tsa tsc tse tsn tso tsp tsr tss tst tta ttc tte ttn tto ttp ttr tts ttt