-er -th a-a a-b a-c a-t aaa aab aac aae aag aah aao aar aas aat aau ab- aba abb abc abe abg abh abo abr abs abt abu ac- aca acb acc ace acg ach aco acr acs act acu aea aeb aec aee aeg aeh aeo aer aes aet aeu ag- aga agb agc age agg agh ago agr ags agt agu aha ahb ahc ahe ahg ahh aho ahr ahs aht ahu aoa aob aoc aoe aog aoh aoo aor aos aot aou ar- ara arb arc are arg arh aro arr ars art aru as- asa asb asc ase asg ash aso asr ass ast asu at- ata atb atc ate atg ath ato atr ats att atu au- aua aub auc aue aug auh auo aur aus aut b-u baa bab bac bae bag bah bao bar bas bat bau bba bbb bbc bbe bbg bbh bbo bbr bbs bbt bbu bca bcb bcc bce bcg bch bco bcr bcs bct bcu be- bea beb bec bee beg beh beo ber bes bet beu bga bgb bgc bge bgg bgh bgo bgr bgs bgt bgu bha bhb bhc bhe bhg bhh bho bhr bhs bht bhu boa bob boc boe bog boh boo bor bos bot bou bra brb bre brg brh bro brr brs brt bru bsa bsb bsc bse bsg bsh bso bsr bss bst bsu bta btb btc bte btg bth bto btr bts btt btu bua bub buc bue bug buh buo bur bus but buu c-- caa cab cac cae cag cah cao car cas cat cau cba cbb cbc cbe cbg cbh cbo cbr cbs cbt cbu cca ccb ccc cce ccg cch cco ccr ccs cct ccu ce- cea ceb cec cee ceg ceh ceo cer ces cet ceu cga cgb cgc cge cgg cgh cgo cgr cgs cgt cgu ch- cha chb chc che chg chh cho chr chs cht chu co- coa cob coc coe cog coh coo cor cos cot cou cra crb crc cre crg crh cro crr crs crt cru csa csb csc cse csg csh cso csr css cst csu cta ctb ctc cte ctg cth cto ctr cts ctt ctu cua cub cuc cue cug cuh cuo cur cus cut cuu eaa eab eac eae eag eah eao ear eas eat eau eba ebb ebc ebe ebg ebh ebo ebr ebs ebt ebu ec- eca ecb ecc ece ecg ech eco ecr ecs ect ecu eea eeb eec eee eeg eeo eer ees eet ega egb egc ege egg egh ego egr egs egt egu eha ehb ehc ehe ehg ehh eho ehr ehs eht ehu eo- eoa eob eoc eoe eog eoh eoo eor eos eot eou era erb erc ere erg erh ero err ers ert eru es- esa esb esc ese esg esh eso esr ess est esu eta etb etc ete etg eth eto etr ets ett etu eu- eua eub euc eue eug eur eus eut gaa gab gac gae gag gah gao gar gas gat gau gba gbc gbe gbg gbh gbo gbr gbs gbt gbu gca gcb gcc gce gcg gch gco gcr gcs gct gcu ge- gea geb gec gee geg geh geo ger ges get geu gga ggb ggc ggg ggh ggo ggr ggs ggt ggu gha ghb ghc ghe ghg ghh gho ghr ghs ght goa gob goc goe gog goh goo gor gos got gou gra grb grc gre grg grh gro grr grs grt gru gsa gsb gsc gse gsg gso gsr gss gst gsu gta gtb gtc gte gtg gth gto gtr gts gtt gtu gu- gua gub guc gue gug guo gur gus gut guu haa hab hac hae hag hah hao har has hat hau hba hbb hbc hbe hbg hbh hbo hbr hbs hbt hbu hca hcb hcc hce hcg hch hco hcr hcs hct he- hea heb hec hee heg heh heo her hes het heu hga hgb hgc hge hgg hgh hgo hgr hgs hgt hgu hha hhb hhc hhe hhg hhh hho hhr hhs hht hhu hoa hob hoc hoe hog hoh hoo hor hos hot hou hr- hra hrb hrc hre hrg hrh hro hrr hrs hrt hru hsa hsb hsc hse hsg hsh hsr hss hst hsu hta htb htc hte htg hth hto htr hts htt hua hub huc hue hug huh huo hur hus hut huu oaa oab oac oae oag oah oao oar oas oat oau ob- oba obb obc obe obg obh obo obr obs obt obu oc- oca ocb occ ocg och oco ocr ocs oct ocu oea oeb oec oee oeg oeh oeo oer oes oet oga ogc oge ogg ogh ogo ogs ogt oha ohc ohe ohg ohh oho ohr ohs oht ohu oo- ooa oob ooc oog ooh ooo oor oos oot or- ora orb orc ore org orh oro orr ors ort oru os- osa osb osc ose osg osh oso osr oss ost osu ot- ota otb otc ote otg oth oto otr ots ott otu ou- oua ouc oue ouh ouo our ous out ra- raa rab rac rae rag rah rao rar ras rat rau rba rbb rbc rbe rbg rbh rbo rbr rbs rbt rbu rca rcb rcc rce rcg rch rco rcr rcs rct rcu re- rea reb rec ree reg reh reo rer res ret reu rga rgb rgc rge rgg rgh rgo rgr rgs rgt rh- rha rhb rhc rhe rhg rhh rho rhr rhs rht rhu roa rob roc roe rog roh roo ror ros rot rou rra rrb rrc rrg rrh rrr rrs rrt rru rsa rsb rsc rse rsg rsh rso rsr rss rst rsu rta rtb rtc rte rtg rto rtr rts rtt rtu rua rub ruc rue rug ruh ruo rur rus rut ruu saa sab sac sae sag sah sao sar sas sat sau sba sbb sbc sbe sbg sbh sbo sbr sbs sbt sbu sca scb scc