-er a-a a-b a-c a-t aaa aab aac aae aaf aag aar aas aat ab- aba abb abc abe abf abg abr abs abt ac- aca acb acc ace acf acg acr acs act aea aeb aec aee aef aeg aer aes aet af- afa afb afc afe aff afg afr afs aft ag- aga agb agc age agf agg agr ags agt ar- ara arb arc are arf arg arr ars art as- asa asb asc ase asf asg asr ass ast at- ata atb atc ate atf atg atr ats att baa bab bac bae baf bag bar bas bat bba bbb bbc bbe bbf bbg bbr bbs bbt bca bcb bcc bce bcf bcg bcr bcs bct be- bea beb bec bee bef beg ber bes bet bfa bfb bfc bfe bff bfg bfr bfs bft bga bgb bgc bge bgf bgg bgr bgs bgt bra brb bre brf brg brr brs brt bsa bsb bsc bse bsf bsg bsr bss bst bta btb btc bte btf btg btr bts btt c-- caa cab cac cae caf cag car cas cat cba cbb cbc cbe cbf cbg cbr cbs cbt cca ccb ccc cce ccf ccg ccr ccs cct ce- cea ceb cec cee cef ceg cer ces cet cfa cfb cfc cfe cff cfg cfr cfs cft cga cgb cgc cge cgg cgr cgs cgt cra crb crc cre crf crg crr crs crt csa csb csc cse csf csg csr css cst cta ctb ctc cte ctf ctg ctr cts ctt eaa eab eac eae eaf eag ear eas eat eba ebb ebc ebe ebf ebg ebr ebs ebt ec- eca ecb ecc ece ecf ecg ecr ecs ect eea eeb eec eee eef eeg eer ees eet ef- efa efb efc efe eff efg efr efs eft ega egb egc ege egf egg egr egs egt era erb erc ere erf erg err ers ert es- esa esb esc ese esf esg esr ess est eta etb etc ete etf etg etr ets ett faa fab fac fae faf fag far fas fat fba fbb fbc fbe fbf fbg fbr fbs fbt fca fcb fcc fce fcf fcg fcr fcs fct fea feb fec fee fef feg fer fes fet ffa ffc ffe fff ffg ffr ffs fft fga fgb fgc fge fgf fgg fgr fgs fgt fra frb frc fre frf frg frr frs frt fsa fsb fsc fse fsf fsg fsr fss fst fta ftb ftc fte ftf ftg ftr fts ftt gaa gab gac gae gaf gag gar gas gat gba gbc gbe gbf gbg gbr gbs gbt gca gcb gcc gce gcf gcg gcr gcs gct ge- gea geb gec gee gef geg ger ges get gfa gfb gfc gfe gff gfr gfs gft gga ggb ggc ggg ggr ggs ggt gra grb grc gre grf grg grr grs grt gsa gsb gsc gse gsf gsg gsr gss gst gta gtb gtc gte gtf gtg gtr gts gtt ra- raa rab rac rae raf rag rar ras rat rba rbb rbc rbe rbf rbg rbr rbs rbt rca rcb rcc rce rcf rcg rcr rcs rct re- rea reb rec ree ref reg rer res ret rfa rfb rfc rfe rff rfg rfr rfs rft rga rgb rgc rge rgf rgg rgr rgs rgt rra rrb rrc rrf rrg rrr rrs rrt rsa rsb rsc rse rsf rsg rsr rss rst rta rtb rtc rte rtf rtg rtr rts rtt saa sab sac sae saf sag sar sas sat sba sbb sbc sbe sbf sbg sbr sbs sbt sca scb scc sce scf scg scr scs sct se- sea seb sec see sef seg ser ses set sfa sfb sfc sfe sff sfg sfr sfs sft sga sgb sgc sge sgf sgg sgr sgs sgt sr- sra srb src sre srf srg srr srs srt ss- ssa ssb ssc sse ssf ssg ssr sss sst sta stb stc ste stf stg str sts stt taa tab tac tae taf tag tar tas tat tba tbb tbc tbe tbf tbg tbr tbs tbt tca tcb tcc tce tcf tcg tcr tcs tct te- tea teb tec tee tef teg ter tes tet tfa tfb tfc tfe tff tfg tfr tfs tft tga tgb tgc tge tgf tgg tgr tgs tgt tra trb trc tre trf trg trr trs trt tsa tsb tsc tse tsf tsg tsr tss tst tta ttb ttc tte ttf ttg ttr tts ttt

-ase a-be aaaa aaab aaac aaae aaaf aaar aaas aaba aabb aabc aabt aaca aacb aacc aace aacf aacr aacs aact aaea aaec aaes aafa aafb aafc aaff aage aara aarc aare aars aart aasa aasc aase aasf aass aast aata aatc aatf aatt abaa abab abac abae abaf abag abar abas abat abb- abba abbb abbe abbr abbs abbt abca abcb abcc abcf abcr abcs abct abec abee aber abes abet abff abra abrc abrs abs- absa abse absf abss abta abts ac-t acaa acab acac acae acag acar acas acat acba acca accc acce accf accs acct ace- acea acec acer aces acet acfc acfe acfs acft acga acgr acgs acr- acra acrc acre acrr acrs acsa acsc acse acss acst acta actc acte actf actg acts actt aeac aeaf aeas aebs aecb aect aeer aega aer- aera aerc aers aesc aess aest aeta aetc aetf aetr aett afaa afar afat afbs afca afcb afcc afcs afee afer afes afet affa affc affs afft afgf afr- afra afrc afre afrs afsa afsb afsc afst afta aftc afte afts agac agag agar agas agat agba agca agcc agce agct agea agee ager ages aget agfa agga agge agra agre agsa agsg agst agta agte agtr agts arab arac arae araf arag arar aras arat arba arbe arbs arc- arca arce arcs arct area arec aree aref areg ares aret arfa arfb arfc arff arfs arft arga argb arge args arr- arra arrc arre arrg arrr arrs arrt ars- arsa arsc arse arst arta