-th a-a a-b a-c a-t aaa aab aac aae aaf aag aah aao aas aat aau ab- aba abb abc abe abf abg abh abo abs abt abu ac- aca acb acc ace acf acg ach aco acs act acu aea aeb aec aee aef aeg aeh aeo aes aet aeu af- afa afb afc afe aff afg afh afo afs aft afu ag- aga agb agc age agf agg agh ago ags agt agu aha ahb ahc ahe ahf ahg ahh aho ahs aht ahu aoa aob aoc aoe aof aog aoh aoo aos aot aou as- asa asb asc ase asf asg ash aso ass ast asu at- ata atb atc ate atf atg ath ato ats att atu au- aua aub auc aue auf aug auh auo aus aut b-u baa bab bac bae baf bag bah bao bas bat bau bba bbb bbc bbe bbf bbg bbh bbo bbs bbt bbu bca bcb bcc bce bcf bcg bch bco bcs bct bcu be- bea beb bec bee bef beg beh beo bes bet beu bfa bfb bfc bfe bff bfg bfh bfo bfs bft bfu bga bgb bgc bge bgf bgg bgh bgo bgs bgt bgu bha bhb bhc bhe bhf bhg bhh bho bhs bht bhu boa bob boc boe bof bog boh boo bos bot bou bsa bsb bsc bse bsf bsg bsh bso bss bst bsu bta btb btc bte btf btg bth bto bts btt btu bua bub buc bue buf bug buh buo bus but buu c-- caa cab cac cae caf cag cah cao cas cat cau cba cbb cbc cbe cbf cbg cbh cbo cbs cbt cbu cca ccb ccc cce ccf ccg cch cco ccs cct ccu ce- cea ceb cec cee cef ceg ceh ceo ces cet ceu cfa cfb cfc cfe cff cfg cfh cfo cfs cft cfu cga cgb cgc cge cgg cgh cgo cgs cgt cgu ch- cha chb chc che chf chg chh cho chs cht chu co- coa cob coc coe cof cog coh coo cos cot cou csa csb csc cse csf csg csh cso css cst csu cta ctb ctc cte ctf ctg cth cto cts ctt ctu cua cub cuc cue cuf cug cuh cuo cus cut cuu eaa eab eac eae eaf eag eah eao eas eat eau eba ebb ebc ebe ebf ebg ebh ebo ebs ebt ebu ec- eca ecb ecc ece ecf ecg ech eco ecs ect ecu eea eeb eec eee eef eeg eeo ees eet ef- efa efb efc efe eff efg efh efo efs eft ega egb egc ege egf egg egh ego egs egt egu eha ehb ehc ehe ehf ehg ehh eho ehs eht ehu eo- eoa eob eoc eoe eof eog eoh eoo eos eot eou es- esa esb esc ese esf esg esh eso ess est esu eta etb etc ete etf etg eth eto ets ett etu eu- eua eub euc eue euf eug eus eut faa fab fac fae faf fag fah fao fas fat fau fba fbb fbc fbe fbf fbg fbh fbo fbs fbt fbu fca fcb fcc fce fcf fcg fco fcs fct fcu fea feb fec fee fef feg feh feo fes fet feu ffa ffc ffe fff ffg ffh ffo ffs fft ffu fga fgb fgc fge fgf fgg fgh fgs fgt fha fhb fhc fhe fhf fhg fhh fho fhs foa fob foc foe fof fog foh foo fos fot fou fsa fsb fsc fse fsf fsg fsh fso fss fst fsu fta ftb ftc fte ftf ftg fth fto fts ftt ftu fua fub fue fuf fug fuo fus fut fuu gaa gab gac gae gaf gag gah gao gas gat gau gba gbc gbe gbf gbg gbh gbo gbs gbt gbu gca gcb gcc gce gcf gcg gch gco gcs gct gcu ge- gea geb gec gee gef geg geh geo ges get geu gfa gfb gfc gfe gff gfh gfo gfs gft gga ggb ggc ggg ggh ggo ggs ggt ggu gha ghb ghc ghe ghg ghh gho ghs ght goa gob goc goe gof gog goh goo gos got gou gsa gsb gsc gse gsf gsg gso gss gst gsu gta gtb gtc gte gtf gtg gth gto gts gtt gtu gu- gua gub guc gue guf gug guo gus gut guu haa hab hac hae haf hag hah hao has hat hau hba hbb hbc hbe hbf hbg hbh hbo hbs hbt hbu hca hcb hcc hce hcf hcg hch hco hcs hct he- hea heb hec hee hef heg heh heo hes het heu hfa hfb hfc hfe hff hfg hfh hfo hfs hft hfu hga hgb hgc hge hgf hgg hgh hgo hgs hgt hgu hha hhb hhc hhe hhf hhg hhh hho hhs hht hhu hoa hob hoc hoe hof hog hoh hoo hos hot hou hsa hsb hsc hse hsf hsg hsh hss hst hsu hta htb htc hte htf htg hth hto hts htt hua hub huc hue huf hug huh huo hus hut huu oaa oab oac oae oaf oag oah oao oas oat oau ob- oba obb obc obe obf obg obh obo obs obt obu oc- oca ocb occ ocf ocg och oco ocs oct ocu oea oeb oec oee oef oeg oeh oeo oes oet of- ofa ofb ofc ofe off ofg ofo ofs oft ofu oga ogc oge ogf ogg ogh ogo ogs ogt oha ohc ohe ohf ohg ohh oho ohs oht ohu oo- ooa oob ooc oof oog ooh ooo oos oot os- osa osb osc ose osf osg osh oso oss ost osu ot- ota otb otc ote otf otg oth oto ots ott otu ou- oua ouc oue ouf ouh ouo ous out saa sab sac sae saf sag sah sao sas sat sau sba sbb sbc sbe sbf sbg sbh sbo sbs sbt sbu sca scb scc sce scf scg sch sco scs sct scu se- sea seb sec see