-er -ic -th a-a a-c a-i a-t aaa aac aae aag aah aai aar aat ac- aca acc ace acg ach aci acr act aea aec aee aeg aeh aei aer aet ag- aga agc age agg agh agi agr agt aha ahc ahe ahg ahh ahi ahr aht ai- aia aic aie aig aih aii air ait ar- ara arc are arg arh ari arr art at- ata atc ate atg ath ati atr att c-- caa cac cae cag cah cai car cat cca ccc cce ccg cch cci ccr cct ce- cea cec cee ceg ceh cei cer cet cga cgc cge cgg cgh cgi cgr cgt ch- cha chc che chg chh chi chr cht ci- cia cic cie cig cih cii cir cit cra crc cre crg crh cri crr crt cta ctc cte ctg cth cti ctr ctt eaa eac eae eag eah eai ear eat ec- eca ecc ece ecg ech eci ecr ect eea eec eee eeg eer eet ega egc ege egg egh egi egr egt eha ehc ehe ehg ehh ehi ehr eht eia eic eie eig eii eir eit era erc ere erg erh eri err ert eta etc ete etg eth eti etr ett gaa gac gae gag gah gai gar gat gca gcc gce gcg gch gci gcr gct ge- gea gec gee geg geh gei ger get gga ggc ggg ggh ggi ggr ggt gha ghc ghe ghg ghh ghi ghr ght gia gic gie gig gih gii gir git gra grc gre grg grh gri grr grt gta gtc gte gtg gth gti gtr gtt h-i haa hac hae hag hah hai har hat hca hcc hce hcg hch hci hcr hct he- hea hec hee heg heh hei her het hga hgc hge hgg hgh hgi hgr hgt hha hhc hhe hhg hhh hhi hhr hht hia hic hie hig hih hii hir hit hr- hra hrc hre hrg hrh hri hrr hrt hta htc hte htg hth hti htr htt ia- iaa iac iae iag iah iai iar iat ica icc ice icg ich ici icr ict ie- iea iec iee ieg iei ier iet iga igc ige igg igh igi igr igt iha ihc ihe ihg ihh ihi ihr iht iia iic iie iih iii iir iit ir- ira irc ire irg iri irr irt ita itc ite itg ith iti itt ra- raa rac rae rag rah rai rar rat rca rcc rce rcg rch rci rcr rct re- rea rec ree reg reh rei rer ret rga rgc rge rgg rgh rgi rgr rgt rh- rha rhc rhe rhg rhh rhi rhr rht ria ric rie rig rih rii rir rit rra rrc rrg rrh rri rrr rrt rta rtc rte rtg rti rtr rtt taa tac tae tag tah tai tar tat tca tcc tce tcg tch tci tcr tct te- tea tec tee teg teh tei ter tet tga tgc tge tgg tgh tgi tgr tgt th- tha thc the thg thh thi thr tht tia tic tie tig tih tii tir tit tra trc tre trg trh tri trr trt tta ttc tte ttg tth tti ttr ttt