-er -ic a-a a-c a-i a-t aaa aac aae aag aai aam aar aat ac- aca acc ace acg aci acm acr act aea aec aee aeg aei aem aer aet ag- aga agc age agg agi agm agr agt ai- aia aic aie aig aii aim air ait ama amc ame amg ami amm amr amt ar- ara arc are arg ari arm arr art at- ata atc ate atg ati atm atr att c-- caa cac cae cag cai cam car cat cca ccc cce ccg cci ccm ccr cct ce- cea cec cee ceg cei cem cer cet cga cgc cge cgg cgi cgm cgr cgt ci- cia cic cie cig cii cim cir cit cma cmc cme cmg cmi cmm cmr cmt cra crc cre crg cri crm crr crt cta ctc cte ctg cti ctm ctr ctt eaa eac eae eag eai eam ear eat ec- eca ecc ece ecg eci ecm ecr ect eea eec eee eeg eem eer eet ega egc ege egg egi egm egr egt eia eic eie eig eii eim eir eit em- ema emc eme emg emi emm emr emt era erc ere erg eri erm err ert eta etc ete etg eti etm etr ett gaa gac gae gag gai gam gar gat gca gcc gce gcg gci gcm gcr gct ge- gea gec gee geg gei gem ger get gga ggc ggg ggi ggm ggr ggt gia gic gie gig gii gim gir git gma gmc gme gmg gmi gmm gmr gmt gra grc gre grg gri grm grr grt gta gtc gte gtg gti gtm gtr gtt ia- iaa iac iae iag iai iam iar iat ica icc ice icg ici icm icr ict ie- iea iec iee ieg iei iem ier iet iga igc ige igg igi igm igr igt iia iic iie iii iim iir iit im- ima imc ime img imi imm imt ir- ira irc ire irg iri irm irr irt ita itc ite itg iti itm itt m-r maa mac mae mag mai mam mar mat mc- mca mcc mce mcg mci mcm mcr mct mea mec mee meg mei mem mer met mga mgc mge mgi mgm mgr mgt mi- mia mic mie mig mii mim mir mit mma mmc mme mmg mmi mmm mmr mmt mra mrc mre mrg mri mrm mrr mrt mta mtc mte mtg mti mtm mtr mtt ra- raa rac rae rag rai ram rar rat rca rcc rce rcg rci rcm rcr rct re- rea rec ree reg rei rem rer ret rga rgc rge rgg rgi rgr rgt ria ric rie rig rii rim rir rit rma rmc rme rmg rmi rmm rmr rmt rra rrc rrg rri rrm rrr rrt rta rtc rte rtg rti rtm rtr rtt taa tac tae tag tai tam tar tat tca tcc tce tcg tci tcm tcr tct te- tea tec tee teg tei tem ter tet tga tgc tge tgg tgi tgm tgr tgt tia tic tie tig tii tim tir tit tma tmc tme tmg tmi tmm tmr tmt tra trc tre trg tri trm trr trt tta ttc tte ttg tti ttm ttr ttt