-er a-a a-c aaa aac aae aag aan aao aar aau aav ac- aca acc ace acg acn aco acr acu acv aea aec aee aeg aen aeo aer aeu aev ag- aga agc age agg agn ago agr agu agv an- ana anc ane ang ann ano anr anu anv aoa aoc aoe aog aon aoo aor aou aov ar- ara arc are arg arn aro arr aru arv au- aua auc aue aug aun auo aur auv av- ava avc ave avg avn avo avr avu c-- caa cac cae cag can cao car cau cav cca ccc cce ccg ccn cco ccr ccu ccv ce- cea cec cee ceg cen ceo cer ceu cev cga cgc cge cgg cgn cgo cgr cgu cgv cn- cna cnc cne cng cnn cno cnr cnu cnv co- coa coc coe cog con coo cor cou cov cra crc cre crg crn cro crr cru crv cua cuc cue cug cun cuo cur cuu cuv cva cvc cve cvg cvn cvo cvr cvu cvv eaa eac eae eag ean eao ear eau eav ec- eca ecc ece ecg ecn eco ecr ecu ecv eea eec eee eeg een eeo eer eev ega egc ege egg egn ego egr egu en- ena enc ene eng enn eno enr enu env eo- eoa eoc eoe eog eon eoo eor eou era erc ere erg ern ero err eru erv eu- eua euc eue eug eun eur euv eva evc eve evg evn evo evr evv gaa gac gae gag gan gao gar gau gav gca gcc gce gcg gcn gco gcr gcu ge- gea gec gee geg gen geo ger geu gev gga ggc ggg ggn ggo ggr ggu ggv gna gnc gne gnn gno gnr gnu gnv goa goc goe gog gon goo gor gou gov gra grc gre grg grn gro grr gru grv gu- gua guc gue gug gun guo gur guu guv gva gvc gve gvg gvn gvo gvr gvu naa nac nae nag nan nao nar nau nav nca ncc nce ncg ncn nco ncr ncu ncv ne- nea nec nee neg nen neo ner neu nev nga ngc nge ngg ngn ngo ngu nna nnc nne nng nnn nno nnu nnv no- noa noc noe nog non noo nor nou nov nra nrc nre nrg nrn nro nrr nru nrv nua nuc nue nug nun nuo nur nuu nuv nva nvc nve nvg nvn nvu nvv oaa oac oae oag oan oao oar oau oav oc- oca occ ocg ocn oco ocr ocu ocv oea oec oee oeg oen oeo oer oga ogc oge ogg ogn ogo on- ona onc one ong onn ono onr onu oo- ooa ooc oog oon ooo oor oov or- ora orc ore org orn oro orr oru orv ou- oua ouc oue oun ouo our ov- ova ovc ove ovo ovv ra- raa rac rae rag ran rao rar rau rav rca rcc rce rcg rcn rco rcr rcu rcv re- rea rec ree reg ren reo rer reu rev rga rgc rge rgg rgn rgo rgr rgv rna rnc rng rnn rno rnr rnu rnv roa roc roe rog ron roo ror rou rov rra rrc rrg rrn rrr rru rua ruc rue rug run ruo rur ruu ruv rva rvc rve rvg rvn rvo rvr rvu rvv ua- uaa uac uae uag uan uao uar uau uav uca ucc uce ucg ucn uco ucr ucu ucv uea uec uee ueg uen uer uga ugc uge ugg ugn ugo ugr ugu un- una unc une ung unn uno unr unu unv uoa uoc uoe uog uon uoo uor ur- ura urc ure urg urn uro urr uru uua uuc uue uug uun uur uuu uva uvc uve uvo uvu uvv v-a v-e vaa vac vae vag van vao var vau vav vca vcc vce vcn vco vcr vcu vea vec vee veg ven veo ver veu vga vgc vgg vgn vgo vgr vgu vn- vna vng vno vnr vnu vnv voa voc voe vog von voo vor vou vov vra vrc vre vrg vrn vrr vru vue vug vur vuv vva vvc vvg vvo vvr vvv