-er -ic a-a a-c a-i a-t aaa aac aae aag aai aan aar aat ac- aca acc ace acg aci acn acr act aea aec aee aeg aei aen aer aet ag- aga agc age agg agi agn agr agt ai- aia aic aie aig aii ain air ait an- ana anc ane ang ani ann anr ant ar- ara arc are arg ari arn arr art at- ata atc ate atg ati atn atr att c-- caa cac cae cag cai can car cat cca ccc cce ccg cci ccn ccr cct ce- cea cec cee ceg cei cen cer cet cga cgc cge cgg cgi cgn cgr cgt ci- cia cic cie cig cii cin cir cit cn- cna cnc cne cng cni cnn cnr cnt cra crc cre crg cri crn crr crt cta ctc cte ctg cti ctn ctr ctt eaa eac eae eag eai ean ear eat ec- eca ecc ece ecg eci ecn ecr ect eea eec eee eeg een eer eet ega egc ege egg egi egn egr egt eia eic eie eig eii ein eir eit en- ena enc ene eng eni enn enr ent era erc ere erg eri ern err ert eta etc ete etg eti etn etr ett gaa gac gae gag gai gan gar gat gca gcc gce gcg gci gcn gcr gct ge- gea gec gee geg gei gen ger get gga ggc ggg ggi ggn ggr ggt gia gic gie gig gii gin gir git gna gnc gne gni gnn gnr gnt gra grc gre grg gri grn grr grt gta gtc gte gtg gti gtn gtr gtt ia- iaa iac iae iag iai ian iar iat ica icc ice icg ici icn icr ict ie- iea iec iee ieg iei ien ier iet iga igc ige igg igi ign igr igt iia iic iie iii iin iir iit in- ina inc ine ing ini inn inr int ir- ira irc ire irg iri irn irr irt ita itc ite itg iti itn itt n-i naa nac nae nag nai nan nar nat nca ncc nce ncg nci ncn ncr nct ne- nea nec nee neg nei nen ner net nga ngc nge ngg ngi ngn ngt nia nic nie nig nii nin nir nit nna nnc nne nng nni nnn nnt nra nrc nre nrg nri nrn nrr nrt nta ntc nte ntg nti ntn ntr ntt ra- raa rac rae rag rai ran rar rat rca rcc rce rcg rci rcn rcr rct re- rea rec ree reg rei ren rer ret rga rgc rge rgg rgi rgn rgr rgt ria ric rie rig rii rin rir rit rna rnc rng rni rnn rnr rnt rra rrc rrg rri rrn rrr rrt rta rtc rte rtg rti rtn rtr rtt taa tac tae tag tai tan tar tat tca tcc tce tcg tci tcn tcr tct te- tea tec tee teg tei ten ter tet tga tgc tge tgg tgi tgn tgr tgt tia tic tie tig tii tin tir tit tna tnc tne tng tni tnn tnr tnt tra trc tre trg tri trn trr trt tta ttc tte ttg tti ttn ttr ttt