-er a-a a-c aaa aac aae aan aao aar aas aau ac- aca acc ace acn aco acr acs acu aea aec aee aen aeo aer aes aeu an- ana anc ane ann ano anr ans anu aoa aoc aoe aon aoo aor aos aou ar- ara arc are arn aro arr ars aru as- asa asc ase asn aso asr ass asu au- aua auc aue aun auo aur aus c-- caa cac cae can cao car cas cau cca ccc cce ccn cco ccr ccs ccu ce- cea cec cee cen ceo cer ces ceu cn- cna cnc cne cnn cno cnr cns cnu co- coa coc coe con coo cor cos cou cra crc cre crn cro crr crs cru csa csc cse csn cso csr css csu cua cuc cue cun cuo cur cus cuu eaa eac eae ean eao ear eas eau ec- eca ecc ece ecn eco ecr ecs ecu eea eec eee een eeo eer ees en- ena enc ene enn eno enr ens enu eo- eoa eoc eoe eon eoo eor eos eou era erc ere ern ero err ers eru es- esa esc ese esn eso esr ess esu eu- eua euc eue eun eur eus naa nac nae nan nao nar nas nau nca ncc nce ncn nco ncr ncs ncu ne- nea nec nee nen neo ner nes neu nna nnc nne nnn nno nns nnu no- noa noc noe non noo nor nos nou nra nrc nre nrn nro nrr nrs nru nsa nsc nse nsn nso nsr nss nsu nua nuc nue nun nuo nur nus nuu oaa oac oae oan oao oar oas oau oc- oca occ ocn oco ocr ocs ocu oea oec oee oen oeo oer oes on- ona onc one onn ono onr ons onu oo- ooa ooc oon ooo oor oos or- ora orc ore orn oro orr ors oru os- osa osc ose osn oso osr oss osu ou- oua ouc oue oun ouo our ous ra- raa rac rae ran rao rar ras rau rca rcc rce rcn rco rcr rcs rcu re- rea rec ree ren reo rer res reu rna rnc rnn rno rnr rns rnu roa roc roe ron roo ror ros rou rra rrc rrn rrr rrs rru rsa rsc rse rsn rso rsr rss rsu rua ruc rue run ruo rur rus ruu saa sac sae san sao sar sas sau sca scc sce scn sco scr scs scu se- sea sec see sen seo ser ses seu sna snc sne snn sno snr sns snu soa soc soe son soo sor sos sou sr- sra src sre srn sro srr srs ss- ssa ssc sse ssn sso ssr sss ssu sua suc sue sun suo sur sus suu ua- uaa uac uae uan uao uar uas uau uca ucc uce ucn uco ucr ucs ucu uea uec uee uen uer ues un- una unc une unn uno unr uns unu uoa uoc uoe uon uoo uor uos ur- ura urc ure urn uro urr urs uru usa usc use usn uso usr uss usu uua uuc uue uun uur uus uuu