-er -ic a-a a-c a-i a-t aaa aac aae aag aai aam aao aar aat ac- aca acc ace acg aci acm aco acr act aea aec aee aeg aei aem aeo aer aet ag- aga agc age agg agi agm ago agr agt ai- aia aic aie aig aii aim aio air ait ama amc ame amg ami amm amo amr amt aoa aoc aoe aog aoi aom aoo aor aot ar- ara arc are arg ari arm aro arr art at- ata atc ate atg ati atm ato atr att c-- caa cac cae cag cai cam cao car cat cca ccc cce ccg cci ccm cco ccr cct ce- cea cec cee ceg cei cem ceo cer cet cga cgc cge cgg cgi cgm cgo cgr cgt ci- cia cic cie cig cii cim cio cir cit cma cmc cme cmg cmi cmm cmo cmr cmt co- coa coc coe cog coi com coo cor cot cra crc cre crg cri crm cro crr crt cta ctc cte ctg cti ctm cto ctr ctt eaa eac eae eag eai eam eao ear eat ec- eca ecc ece ecg eci ecm eco ecr ect eea eec eee eeg eem eeo eer eet ega egc ege egg egi egm ego egr egt eia eic eie eig eii eim eio eir eit em- ema emc eme emg emi emm emo emr emt eo- eoa eoc eoe eog eoi eom eoo eor eot era erc ere erg eri erm ero err ert eta etc ete etg eti etm eto etr ett gaa gac gae gag gai gam gao gar gat gca gcc gce gcg gci gcm gco gcr gct ge- gea gec gee geg gei gem geo ger get gga ggc ggg ggi ggm ggo ggr ggt gia gic gie gig gii gim gio gir git gma gmc gme gmg gmi gmm gmo gmr gmt goa goc goe gog goi gom goo gor got gra grc gre grg gri grm gro grr grt gta gtc gte gtg gti gtm gto gtr gtt ia- iaa iac iae iag iai iam iao iar iat ica icc ice icg ici icm ico icr ict ie- iea iec iee ieg iei iem ier iet iga igc ige igg igi igm igo igr igt iia iic iie iii iim iio iir iit im- ima imc ime img imi imm imo imt io- ioa ioc ioe iog ioi iom ioo ior iot ir- ira irc ire irg iri irm iro irr irt ita itc ite itg iti itm ito itt m-o m-r maa mac mae mag mai mam mao mar mat mc- mca mcc mce mcg mci mcm mco mcr mct mea mec mee meg mei mem meo mer met mga mgc mge mgi mgm mgo mgr mgt mi- mia mic mie mig mii mim mio mir mit mma mmc mme mmg mmi mmm mmo mmr mmt moa moc moe mog moi mom moo mor mot mra mrc mre mrg mri mrm mro mrr mrt mta mtc mte mtg mti mtm mto mtr mtt o-i oaa oac oae oag oai oam oao oar oat oc- oca occ ocg oci ocm oco ocr oct oea oec oee oeg oei oem oeo oer oet oga ogc oge ogg ogi ogo ogt oia oic oie oii oim oio oir oit om- oma omc ome omg omi omm omo omr omt oo- ooa ooc oog ooi oom ooo oor oot or- ora orc ore org ori orm oro orr ort ot- ota otc ote otg oti otm oto otr ott ra- raa rac rae rag rai ram rao rar rat rca rcc rce rcg rci rcm rco rcr rct re- rea rec ree reg rei rem reo rer ret rga rgc rge rgg rgi rgo rgr rgt ria ric rie rig rii rim rio rir rit rma rmc rme rmg rmi rmm rmo rmr rmt roa roc roe rog roi rom roo ror rot rra rrc rrg rri rrm rrr rrt rta rtc rte rtg rti rtm rto rtr rtt taa tac tae tag tai tam tao tar tat tca tcc tce tcg tci tcm tco tcr tct te- tea tec tee teg tei tem teo ter tet tga tgc tge tgg tgi tgm tgo tgr tgt tia tic tie tig tii tim tio tir tit tma tmc tme tmg tmi tmm tmo tmr tmt to- toa toc toe tog toi tom too tor tot tra trc tre trg tri trm tro trr trt tta ttc tte ttg tti ttm tto ttr ttt