-er a-a a-c aaa aac aae aag aan aar aau aav ac- aca acc ace acg acn acr acu acv aea aec aee aeg aen aer aeu aev ag- aga agc age agg agn agr agu agv an- ana anc ane ang ann anr anu anv ar- ara arc are arg arn arr aru arv au- aua auc aue aug aun aur auv av- ava avc ave avg avn avr avu c-- caa cac cae cag can car cau cav cca ccc cce ccg ccn ccr ccu ccv ce- cea cec cee ceg cen cer ceu cev cga cgc cge cgg cgn cgr cgu cgv cn- cna cnc cne cng cnn cnr cnu cnv cra crc cre crg crn crr cru crv cua cuc cue cug cun cur cuu cuv cva cvc cve cvg cvn cvr cvu cvv eaa eac eae eag ean ear eau eav ec- eca ecc ece ecg ecn ecr ecu ecv eea eec eee eeg een eer eev ega egc ege egg egn egr egu en- ena enc ene eng enn enr enu env era erc ere erg ern err eru erv eu- eua euc eue eug eun eur euv eva evc eve evg evn evr evv gaa gac gae gag gan gar gau gav gca gcc gce gcg gcn gcr gcu ge- gea gec gee geg gen ger geu gev gga ggc ggg ggn ggr ggu ggv gna gnc gne gnn gnr gnu gnv gra grc gre grg grn grr gru grv gu- gua guc gue gug gun gur guu guv gva gvc gve gvg gvn gvr gvu naa nac nae nag nan nar nau nav nca ncc nce ncg ncn ncr ncu ncv ne- nea nec nee neg nen ner neu nev nga ngc nge ngg ngn ngu nna nnc nne nng nnn nnu nnv nra nrc nre nrg nrn nrr nru nrv nua nuc nue nug nun nur nuu nuv nva nvc nve nvg nvn nvu nvv ra- raa rac rae rag ran rar rau rav rca rcc rce rcg rcn rcr rcu rcv re- rea rec ree reg ren rer reu rev rga rgc rge rgg rgn rgr rgv rna rnc rng rnn rnr rnu rnv rra rrc rrg rrn rrr rru rua ruc rue rug run rur ruu ruv rva rvc rve rvg rvn rvr rvu rvv ua- uaa uac uae uag uan uar uau uav uca ucc uce ucg ucn ucr ucu ucv uea uec uee ueg uen uer uga ugc uge ugg ugn ugr ugu un- una unc une ung unn unr unu unv ur- ura urc ure urg urn urr uru uua uuc uue uug uun uur uuu uva uvc uve uvu uvv v-a v-e vaa vac vae vag van var vau vav vca vcc vce vcn vcr vcu vea vec vee veg ven ver veu vga vgc vgg vgn vgr vgu vn- vna vng vnr vnu vnv vra vrc vre vrg vrn vrr vru vue vug vur vuv vva vvc vvg vvr vvv