-th a-a a-b a-t aaa aab aag aah aar aat aau ab- aba abb abg abh abr abt abu ag- aga agb agg agh agr agt agu aha ahb ahg ahh ahr aht ahu ar- ara arb arg arh arr art aru at- ata atb atg ath atr att atu au- aua aub aug auh aur aut b-u baa bab bag bah bar bat bau bba bbb bbg bbh bbr bbt bbu bga bgb bgg bgh bgr bgt bgu bha bhb bhg bhh bhr bht bhu bra brb brg brh brr brt bru bta btb btg bth btr btt btu bua bub bug buh bur but buu gaa gab gag gah gar gat gau gba gbg gbh gbr gbt gbu gga ggb ggg ggh ggr ggt ggu gha ghb ghg ghh ghr ght gra grb grg grh grr grt gru gta gtb gtg gth gtr gtt gtu gu- gua gub gug gur gut guu haa hab hag hah har hat hau hba hbb hbg hbh hbr hbt hbu hga hgb hgg hgh hgr hgt hgu hha hhb hhg hhh hhr hht hhu hr- hra hrb hrg hrh hrr hrt hru hta htb htg hth htr htt hua hub hug huh hur hut huu ra- raa rab rag rah rar rat rau rba rbb rbg rbh rbr rbt rbu rga rgb rgg rgh rgr rgt rh- rha rhb rhg rhh rhr rht rhu rra rrb rrg rrh rrr rrt rru rta rtb rtg rtr rtt rtu rua rub rug ruh rur rut ruu taa tab tag tah tar tat tau tba tbb tbg tbh tbr tbt tbu tga tgb tgg tgh tgr tgt tgu th- tha thb thg thh thr tht thu tra trb trg trh trr trt tru tta ttb ttg tth ttr ttt ttu tua tub tug tuh tur tut tuu ua- uaa uab uag uah uar uat uau uba ubb ubg ubh ubr ubt ubu uga ugb ugg ugh ugr ugt ugu uha uhb uhh uhr uht uhu ur- ura urb urg urr urt uru uta utb uth utr utt utu uua uug uur uut uuu