-th a-a a-b a-c a-t aaa aab aac aag aah aar aat aau ab- aba abb abc abg abh abr abt abu ac- aca acb acc acg ach acr act acu ag- aga agb agc agg agh agr agt agu aha ahb ahc ahg ahh ahr aht ahu ar- ara arb arc arg arh arr art aru at- ata atb atc atg ath atr att atu au- aua aub auc aug auh aur aut b-u baa bab bac bag bah bar bat bau bba bbb bbc bbg bbh bbr bbt bbu bca bcb bcc bcg bch bcr bct bcu bga bgb bgc bgg bgh bgr bgt bgu bha bhb bhc bhg bhh bhr bht bhu bra brb brg brh brr brt bru bta btb btc btg bth btr btt btu bua bub buc bug buh bur but buu c-- caa cab cac cag cah car cat cau cba cbb cbc cbg cbh cbr cbt cbu cca ccb ccc ccg cch ccr cct ccu cga cgb cgc cgg cgh cgr cgt cgu ch- cha chb chc chg chh chr cht chu cra crb crc crg crh crr crt cru cta ctb ctc ctg cth ctr ctt ctu cua cub cuc cug cuh cur cut cuu gaa gab gac gag gah gar gat gau gba gbc gbg gbh gbr gbt gbu gca gcb gcc gcg gch gcr gct gcu gga ggb ggc ggg ggh ggr ggt ggu gha ghb ghc ghg ghh ghr ght gra grb grc grg grh grr grt gru gta gtb gtc gtg gth gtr gtt gtu gu- gua gub guc gug gur gut guu haa hab hac hag hah har hat hau hba hbb hbc hbg hbh hbr hbt hbu hca hcb hcc hcg hch hcr hct hga hgb hgc hgg hgh hgr hgt hgu hha hhb hhc hhg hhh hhr hht hhu hr- hra hrb hrc hrg hrh hrr hrt hru hta htb htc htg hth htr htt hua hub huc hug huh hur hut huu ra- raa rab rac rag rah rar rat rau rba rbb rbc rbg rbh rbr rbt rbu rca rcb rcc rcg rch rcr rct rcu rga rgb rgc rgg rgh rgr rgt rh- rha rhb rhc rhg rhh rhr rht rhu rra rrb rrc rrg rrh rrr rrt rru rta rtb rtc rtg rtr rtt rtu rua rub ruc rug ruh rur rut ruu taa tab tac tag tah tar tat tau tba tbb tbc tbg tbh tbr tbt tbu tca tcb tcc tcg tch tcr tct tcu tga tgb tgc tgg tgh tgr tgt tgu th- tha thb thc thg thh thr tht thu tra trb trc trg trh trr trt tru tta ttb ttc ttg tth ttr ttt ttu tua tub tuc tug tuh tur tut tuu ua- uaa uab uac uag uah uar uat uau uba ubb ubc ubg ubh ubr ubt ubu uca ucb ucc ucg uch ucr uct ucu uga ugb ugc ugg ugh ugr ugt ugu uha uhb uhc uhh uhr uht uhu ur- ura urb urc urg urr urt uru uta utb utc uth utr utt utu uua uuc uug uur uut uuu