-th a-a a-b a-c a-t aaa aab aac aae aag aah aao aas aat ab- aba abb abc abe abg abh abo abs abt ac- aca acb acc ace acg ach aco acs act aea aeb aec aee aeg aeh aeo aes aet ag- aga agb agc age agg agh ago ags agt aha ahb ahc ahe ahg ahh aho ahs aht aoa aob aoc aoe aog aoh aoo aos aot as- asa asb asc ase asg ash aso ass ast at- ata atb atc ate atg ath ato ats att baa bab bac bae bag bah bao bas bat bba bbb bbc bbe bbg bbh bbo bbs bbt bca bcb bcc bce bcg bch bco bcs bct be- bea beb bec bee beg beh beo bes bet bga bgb bgc bge bgg bgh bgo bgs bgt bha bhb bhc bhe bhg bhh bho bhs bht boa bob boc boe bog boh boo bos bot bsa bsb bsc bse bsg bsh bso bss bst bta btb btc bte btg bth bto bts btt c-- caa cab cac cae cag cah cao cas cat cba cbb cbc cbe cbg cbh cbo cbs cbt cca ccb ccc cce ccg cch cco ccs cct ce- cea ceb cec cee ceg ceh ceo ces cet cga cgb cgc cge cgg cgh cgo cgs cgt ch- cha chb chc che chg chh cho chs cht co- coa cob coc coe cog coh coo cos cot csa csb csc cse csg csh cso css cst cta ctb ctc cte ctg cth cto cts ctt eaa eab eac eae eag eah eao eas eat eba ebb ebc ebe ebg ebh ebo ebs ebt ec- eca ecb ecc ece ecg ech eco ecs ect eea eeb eec eee eeg eeo ees eet ega egb egc ege egg egh ego egs egt eha ehb ehc ehe ehg ehh eho ehs eht eo- eoa eob eoc eoe eog eoh eoo eos eot es- esa esb esc ese esg esh eso ess est eta etb etc ete etg eth eto ets ett gaa gab gac gae gag gah gao gas gat gba gbc gbe gbg gbh gbo gbs gbt gca gcb gcc gce gcg gch gco gcs gct ge- gea geb gec gee geg geh geo ges get gga ggb ggc ggg ggh ggo ggs ggt gha ghb ghc ghe ghg ghh gho ghs ght goa gob goc goe gog goh goo gos got gsa gsb gsc gse gsg gso gss gst gta gtb gtc gte gtg gth gto gts gtt haa hab hac hae hag hah hao has hat hba hbb hbc hbe hbg hbh hbo hbs hbt hca hcb hcc hce hcg hch hco hcs hct he- hea heb hec hee heg heh heo hes het hga hgb hgc hge hgg hgh hgo hgs hgt hha hhb hhc hhe hhg hhh hho hhs hht hoa hob hoc hoe hog hoh hoo hos hot hsa hsb hsc hse hsg hsh hss hst hta htb htc hte htg hth hto hts htt oaa oab oac oae oag oah oao oas oat ob- oba obb obc obe obg obh obo obs obt oc- oca ocb occ ocg och oco ocs oct oea oeb oec oee oeg oeh oeo oes oet oga ogc oge ogg ogh ogo ogs ogt oha ohc ohe ohg ohh oho ohs oht oo- ooa oob ooc oog ooh ooo oos oot os- osa osb osc ose osg osh oso oss ost ot- ota otb otc ote otg oth oto ots ott saa sab sac sae sag sah sao sas sat sba sbb sbc sbe sbg sbh sbo sbs sbt sca scb scc sce scg sch sco scs sct se- sea seb sec see seg seh seo ses set sga sgb sgc sge sgg sgh sgo sgs sgt sh- sha shb shc she shg shh sho shs sht soa sob soc soe sog soh soo sos sot ss- ssa ssb ssc sse ssg ssh sso sss sst sta stb stc ste stg sth sto sts stt taa tab tac tae tag tah tao tas tat tba tbb tbc tbe tbg tbh tbo tbs tbt tca tcb tcc tce tcg tch tco tcs tct te- tea teb tec tee teg teh teo tes tet tga tgb tgc tge tgg tgh tgo tgs tgt th- tha thb thc the thg thh tho ths tht to- toa tob toc toe tog toh too tos tot tsa tsb tsc tse tsg tsh tso tss tst tta ttb ttc tte ttg tth tto tts ttt