-er -th a-a a-c a-t aaa aac aae aag aah aan aao aar aat ac- aca acc ace acg ach acn aco acr act aea aec aee aeg aeh aen aeo aer aet ag- aga agc age agg agh agn ago agr agt aha ahc ahe ahg ahh ahn aho ahr aht an- ana anc ane ang anh ann ano anr ant aoa aoc aoe aog aoh aon aoo aor aot ar- ara arc are arg arh arn aro arr art at- ata atc ate atg ath atn ato atr att c-- caa cac cae cag cah can cao car cat cca ccc cce ccg cch ccn cco ccr cct ce- cea cec cee ceg ceh cen ceo cer cet cga cgc cge cgg cgh cgn cgo cgr cgt ch- cha chc che chg chh chn cho chr cht cn- cna cnc cne cng cnh cnn cno cnr cnt co- coa coc coe cog coh con coo cor cot cra crc cre crg crh crn cro crr crt cta ctc cte ctg cth ctn cto ctr ctt eaa eac eae eag eah ean eao ear eat ec- eca ecc ece ecg ech ecn eco ecr ect eea eec eee eeg een eeo eer eet ega egc ege egg egh egn ego egr egt eha ehc ehe ehg ehh ehn eho ehr eht en- ena enc ene eng enh enn eno enr ent eo- eoa eoc eoe eog eoh eon eoo eor eot era erc ere erg erh ern ero err ert eta etc ete etg eth etn eto etr ett gaa gac gae gag gah gan gao gar gat gca gcc gce gcg gch gcn gco gcr gct ge- gea gec gee geg geh gen geo ger get gga ggc ggg ggh ggn ggo ggr ggt gha ghc ghe ghg ghh ghn gho ghr ght gna gnc gne gnn gno gnr gnt goa goc goe gog goh gon goo gor got gra grc gre grg grh grn gro grr grt gta gtc gte gtg gth gtn gto gtr gtt haa hac hae hag hah han hao har hat hca hcc hce hcg hch hcn hco hcr hct he- hea hec hee heg heh hen heo her het hga hgc hge hgg hgh hgn hgo hgr hgt hha hhc hhe hhg hhh hhn hho hhr hht hna hnc hne hng hnh hnn hno hnt hoa hoc hoe hog hoh hon hoo hor hot hr- hra hrc hre hrg hrh hrn hro hrr hrt hta htc hte htg hth htn hto htr htt naa nac nae nag nah nan nao nar nat nca ncc nce ncg nch ncn nco ncr nct ne- nea nec nee neg neh nen neo ner net nga ngc nge ngg ngh ngn ngo ngt nha nhc nhe nhg nhh nhn nhr nht nna nnc nne nng nnh nnn nno nnt no- noa noc noe nog noh non noo nor not nra nrc nre nrg nrn nro nrr nrt nta ntc nte ntg nth ntn nto ntr ntt oaa oac oae oag oah oan oao oar oat oc- oca occ ocg och ocn oco ocr oct oea oec oee oeg oeh oen oeo oer oet oga ogc oge ogg ogh ogn ogo ogt oha ohc ohe ohg ohh ohn oho ohr oht on- ona onc one ong onh onn ono onr ont oo- ooa ooc oog ooh oon ooo oor oot or- ora orc ore org orh orn oro orr ort ot- ota otc ote otg oth otn oto otr ott ra- raa rac rae rag rah ran rao rar rat rca rcc rce rcg rch rcn rco rcr rct re- rea rec ree reg reh ren reo rer ret rga rgc rge rgg rgh rgn rgo rgr rgt rh- rha rhc rhe rhg rhh rhn rho rhr rht rna rnc rng rnh rnn rno rnr rnt roa roc roe rog roh ron roo ror rot rra rrc rrg rrh rrn rrr rrt rta rtc rte rtg rtn rto rtr rtt taa tac tae tag tah tan tao tar tat tca tcc tce tcg tch tcn tco tcr tct te- tea tec tee teg teh ten teo ter tet tga tgc tge tgg tgh tgn tgo tgr tgt th- tha thc the thg thh thn tho thr tht tna tnc tne tng tnh tnn tno tnr tnt to- toa toc toe tog toh ton too tor tot tra trc tre trg trh trn tro trr trt tta ttc tte ttg tth ttn tto ttr ttt