-er a-a a-c a-q aaa aac aae aag aaq aar aas aau ac- aca acc ace acg acq acr acs acu aea aec aee aeg aeq aer aes aeu ag- aga agc age agg agq agr ags agu aqa aqc aqr aqs ar- ara arc are arg arq arr ars aru as- asa asc ase asg asq asr ass asu au- aua auc aue aug aur aus c-- caa cac cae cag caq car cas cau cca ccc cce ccg ccr ccs ccu ce- cea cec cee ceg ceq cer ces ceu cga cgc cge cgg cgr cgs cgu cqa cqc cqg cqs cra crc cre crg crq crr crs cru csa csc cse csg csq csr css csu cua cuc cue cug cuq cur cus cuu eaa eac eae eag ear eas eau ec- eca ecc ece ecg ecq ecr ecs ecu eea eec eee eeg eer ees ega egc ege egg egr egs egu eqa eqe eqq eqs equ era erc ere erg erq err ers eru es- esa esc ese esg esq esr ess esu eu- eua euc eue eug eur eus gaa gac gae gag gar gas gau gca gcc gce gcg gcr gcs gcu ge- gea gec gee geg ger ges geu gga ggc ggg ggr ggs ggu gqs gra grc gre grg grq grr grs gru gsa gsc gse gsg gsr gss gsu gu- gua guc gue gug gur gus guu qaa qac qag qar qas qau qca qcc qcs qec qee qga qgc qqq qqu qra qrc qre qrg qrs qru qsa qsc qsr qu- qua que qur qus ra- raa rac rae rag raq rar ras rau rca rcc rce rcg rcr rcs rcu re- rea rec ree reg req rer res reu rga rgc rge rgg rgr rgs rqc rqs rra rrc rrg rrq rrr rrs rru rsa rsc rse rsg rsq rsr rss rsu rua ruc rue rug rur rus ruu saa sac sae sag saq sar sas sau sca scc sce scg scr scs scu se- sea sec see seg seq ser ses seu sga sgc sge sgg sgr sgs sgu sqa sqq sqr sqs sr- sra src sre srg srq srr srs ss- ssa ssc sse ssg ssq ssr sss ssu sua suc sue sug suq sur sus suu ua- uaa uac uae uag uaq uar uas uau uca ucc uce ucg ucr ucs ucu uea uec uee ueg uer ues uga ugc uge ugg ugr ugs ugu ur- ura urc ure urg urr urs uru usa usc use usg usr uss usu uua uuc uue uug uur uus uuu