-al -er -th a-a a-c a-t aaa aac aae aaf aag aah aal aar aat ac- aca acc ace acf acg ach acl acr act aea aec aee aef aeg aeh ael aer aet af- afa afc afe aff afg afh afl afr aft ag- aga agc age agf agg agh agl agr agt aha ahc ahe ahf ahg ahh ahl ahr aht al- ala alc ale alf alg alh all alr alt ar- ara arc are arf arg arh arl arr art at- ata atc ate atf atg ath atl atr att c-- caa cac cae caf cag cah cal car cat cca ccc cce ccf ccg cch ccl ccr cct ce- cea cec cee cef ceg ceh cel cer cet cfa cfc cfe cff cfg cfh cfl cfr cft cga cgc cge cgg cgh cgl cgr cgt ch- cha chc che chf chg chh chl chr cht cl- cla clc cle clf clg clh cll clr clt cra crc cre crf crg crh crl crr crt cta ctc cte ctf ctg cth ctl ctr ctt eaa eac eae eaf eag eah eal ear eat ec- eca ecc ece ecf ecg ech ecl ecr ect eea eec eee eef eeg eel eer eet ef- efa efc efe eff efg efh efl efr eft ega egc ege egf egg egh egl egr egt eha ehc ehe ehf ehg ehh ehl ehr eht ela elc ele elf elg elh ell elr elt era erc ere erf erg erh erl err ert eta etc ete etf etg eth etl etr ett faa fac fae faf fag fah fal far fat fca fcc fce fcf fcg fcl fcr fct fea fec fee fef feg feh fel fer fet ffa ffc ffe fff ffg ffh ffl ffr fft fga fgc fge fgf fgg fgh fgl fgr fgt fha fhc fhe fhf fhg fhh fhl fhr fla flc fle flf flg fll flr flt fra frc fre frf frg frh frl frr frt fta ftc fte ftf ftg fth ftl ftr ftt gaa gac gae gaf gag gah gal gar gat gca gcc gce gcf gcg gch gcl gcr gct ge- gea gec gee gef geg geh gel ger get gfa gfc gfe gff gfh gfl gfr gft gga ggc ggg ggh ggr ggt gha ghc ghe ghg ghh ghl ghr ght gla glc gle glf glg glh gll glr glt gra grc gre grf grg grh grl grr grt gta gtc gte gtf gtg gth gtl gtr gtt haa hac hae haf hag hah hal har hat hca hcc hce hcf hcg hch hcl hcr hct he- hea hec hee hef heg heh hel her het hfa hfc hfe hff hfg hfh hfl hfr hft hga hgc hge hgf hgg hgh hgl hgr hgt hha hhc hhe hhf hhg hhh hhl hhr hht hla hlc hle hlf hlg hlh hll hlr hlt hr- hra hrc hre hrf hrg hrh hrl hrr hrt hta htc hte htf htg hth htl htr htt la- laa lac lae laf lag lah lal lar lat lca lcc lce lcf lcg lch lcl lcr lct lea lec lee lef leg leh lel ler let lfa lfc lfe lff lfg lfh lfl lfr lft lga lgc lge lgf lgg lgh lgl lgr lgt lha lhc lhf lhh lhr lht lla llc lle llf llg lll llr llt lra lrc lrf lrg lrh lrr lrt lta ltc lte ltf ltg lth ltl ltr ltt ra- raa rac rae raf rag rah ral rar rat rca rcc rce rcf rcg rch rcl rcr rct re- rea rec ree ref reg reh rel rer ret rfa rfc rfe rff rfg rfh rfl rfr rft rga rgc rge rgf rgg rgh rgr rgt rh- rha rhc rhe rhf rhg rhh rhl rhr rht rla rlc rle rlf rlg rlh rll rlr rlt rra rrc rrf rrg rrh rrl rrr rrt rta rtc rte rtf rtg rtl rtr rtt taa tac tae taf tag tah tal tar tat tca tcc tce tcf tcg tch tcl tcr tct te- tea tec tee tef teg teh tel ter tet tfa tfc tfe tff tfg tfh tfl tfr tft tga tgc tge tgf tgg tgh tgl tgr tgt th- tha thc the thf thg thh thl thr tht tla tlc tle tlf tlg tlh tll tlr tlt tra trc tre trf trg trh trl trr trt tta ttc tte ttf ttg tth ttl ttr ttt