-er -th a-a a-b a-c a-t aaa aab aac aae aag aah aar aas aat aau ab- aba abb abc abe abg abh abr abs abt abu ac- aca acb acc ace acg ach acr acs act acu aea aeb aec aee aeg aeh aer aes aet aeu ag- aga agb agc age agg agh agr ags agt agu aha ahb ahc ahe ahg ahh ahr ahs aht ahu ar- ara arb arc are arg arh arr ars art aru as- asa asb asc ase asg ash asr ass ast asu at- ata atb atc ate atg ath atr ats att atu au- aua aub auc aue aug auh aur aus aut b-u baa bab bac bae bag bah bar bas bat bau bba bbb bbc bbe bbg bbh bbr bbs bbt bbu bca bcb bcc bce bcg bch bcr bcs bct bcu be- bea beb bec bee beg beh ber bes bet beu bga bgb bgc bge bgg bgh bgr bgs bgt bgu bha bhb bhc bhe bhg bhh bhr bhs bht bhu bra brb bre brg brh brr brs brt bru bsa bsb bsc bse bsg bsh bsr bss bst bsu bta btb btc bte btg bth btr bts btt btu bua bub buc bue bug buh bur bus but buu c-- caa cab cac cae cag cah car cas cat cau cba cbb cbc cbe cbg cbh cbr cbs cbt cbu cca ccb ccc cce ccg cch ccr ccs cct ccu ce- cea ceb cec cee ceg ceh cer ces cet ceu cga cgb cgc cge cgg cgh cgr cgs cgt cgu ch- cha chb chc che chg chh chr chs cht chu cra crb crc cre crg crh crr crs crt cru csa csb csc cse csg csh csr css cst csu cta ctb ctc cte ctg cth ctr cts ctt ctu cua cub cuc cue cug cuh cur cus cut cuu eaa eab eac eae eag eah ear eas eat eau eba ebb ebc ebe ebg ebh ebr ebs ebt ebu ec- eca ecb ecc ece ecg ech ecr ecs ect ecu eea eeb eec eee eeg eer ees eet ega egb egc ege egg egh egr egs egt egu eha ehb ehc ehe ehg ehh ehr ehs eht ehu era erb erc ere erg erh err ers ert eru es- esa esb esc ese esg esh esr ess est esu eta etb etc ete etg eth etr ets ett etu eu- eua eub euc eue eug eur eus eut gaa gab gac gae gag gah gar gas gat gau gba gbc gbe gbg gbh gbr gbs gbt gbu gca gcb gcc gce gcg gch gcr gcs gct gcu ge- gea geb gec gee geg geh ger ges get geu gga ggb ggc ggg ggh ggr ggs ggt ggu gha ghb ghc ghe ghg ghh ghr ghs ght gra grb grc gre grg grh grr grs grt gru gsa gsb gsc gse gsg gsr gss gst gsu gta gtb gtc gte gtg gth gtr gts gtt gtu gu- gua gub guc gue gug gur gus gut guu haa hab hac hae hag hah har has hat hau hba hbb hbc hbe hbg hbh hbr hbs hbt hbu hca hcb hcc hce hcg hch hcr hcs hct he- hea heb hec hee heg heh her hes het heu hga hgb hgc hge hgg hgh hgr hgs hgt hgu hha hhb hhc hhe hhg hhh hhr hhs hht hhu hr- hra hrb hrc hre hrg hrh hrr hrs hrt hru hsa hsb hsc hse hsg hsh hsr hss hst hsu hta htb htc hte htg hth htr hts htt hua hub huc hue hug huh hur hus hut huu ra- raa rab rac rae rag rah rar ras rat rau rba rbb rbc rbe rbg rbh rbr rbs rbt rbu rca rcb rcc rce rcg rch rcr rcs rct rcu re- rea reb rec ree reg reh rer res ret reu rga rgb rgc rge rgg rgh rgr rgs rgt rh- rha rhb rhc rhe rhg rhh rhr rhs rht rhu rra rrb rrc rrg rrh rrr rrs rrt rru rsa rsb rsc rse rsg rsh rsr rss rst rsu rta rtb rtc rte rtg rtr rts rtt rtu rua rub ruc rue rug ruh rur rus rut ruu saa sab sac sae sag sah sar sas sat sau sba sbb sbc sbe sbg sbh sbr sbs sbt sbu sca scb scc sce scg sch scr scs sct scu se- sea seb sec see seg seh ser ses set seu sga sgb sgc sge sgg sgh sgr sgs sgt sgu sh- sha shb shc she shg shh shr shs sht shu sr- sra srb src sre srg srh srr srs srt ss- ssa ssb ssc sse ssg ssh ssr sss sst ssu sta stb stc ste stg sth str sts stt stu sua sub suc sue sug suh sur sus sut suu taa tab tac tae tag tah tar tas tat tau tba tbb tbc tbe tbg tbh tbr tbs tbt tbu tca tcb tcc tce tcg tch tcr tcs tct tcu te- tea teb tec tee teg teh ter tes tet teu tga tgb tgc tge tgg tgh tgr tgs tgt tgu th- tha thb thc the thg thh thr ths tht thu tra trb trc tre trg trh trr trs trt tru tsa tsb tsc tse tsg tsh tsr tss tst tsu tta ttb ttc tte ttg tth ttr tts ttt ttu tua tub tuc tue tug tuh tur tus tut tuu ua- uaa uab uac uae uag uah uar uas uat uau uba ubb ubc ube ubg ubh ubr ubs ubt ubu uca ucb ucc uce ucg uch ucr ucs uct ucu uea ueb uec uee ueg ueh uer ues uet uga ugb ugc uge ugg ugh ugr ugs ugt ugu uha uhb uhc uhe uhh uhr uhs uht uhu ur- ura urb urc ure urg urr urs urt uru usa usb usc use usg ush usr uss ust usu uta utb utc ute