-er a-a a-c a-q aaa aac aae aag aan aaq aar aau ac- aca acc ace acg acn acq acr acu aea aec aee aeg aen aeq aer aeu ag- aga agc age agg agn agq agr agu an- ana anc ane ang ann anq anr anu aqa aqc aqn aqr ar- ara arc are arg arn arq arr aru au- aua auc aue aug aun aur c-- caa cac cae cag can caq car cau cca ccc cce ccg ccn ccr ccu ce- cea cec cee ceg cen ceq cer ceu cga cgc cge cgg cgn cgr cgu cn- cna cnc cne cng cnn cnr cnu cqa cqc cqg cra crc cre crg crn crq crr cru cua cuc cue cug cun cuq cur cuu eaa eac eae eag ean ear eau ec- eca ecc ece ecg ecn ecq ecr ecu eea eec eee eeg een eer ega egc ege egg egn egr egu en- ena enc ene eng enn enr enu eqa eqe eqn eqq equ era erc ere erg ern erq err eru eu- eua euc eue eug eun eur gaa gac gae gag gan gar gau gca gcc gce gcg gcn gcr gcu ge- gea gec gee geg gen ger geu gga ggc ggg ggn ggr ggu gna gnc gne gnn gnr gnu gra grc gre grg grn grq grr gru gu- gua guc gue gug gun gur guu naa nac nae nag nan nar nau nca ncc nce ncg ncn ncr ncu ne- nea nec nee neg nen ner neu nga ngc nge ngg ngn ngu nna nnc nne nng nnn nnu nqc nra nrc nre nrg nrn nrr nru nua nuc nue nug nun nuq nur nuu qaa qac qag qan qar qau qca qcc qec qee qen qga qgc qgn qne qqq qqu qra qrc qre qrg qru qu- qua que qur ra- raa rac rae rag ran raq rar rau rca rcc rce rcg rcn rcr rcu re- rea rec ree reg ren req rer reu rga rgc rge rgg rgn rgr rna rnc rng rnn rnr rnu rqc rqn rra rrc rrg rrn rrq rrr rru rua ruc rue rug run rur ruu ua- uaa uac uae uag uan uaq uar uau uca ucc uce ucg ucn ucr ucu uea uec uee ueg uen uer uga ugc uge ugg ugn ugr ugu un- una unc une ung unn unq unr unu ur- ura urc ure urg urn urr uru uua uuc uue uug uun uur uuu