-up a-a a-b a-t aaa aab aap aar aat aau aay ab- aba abb abp abr abt abu aby ap- apa apb app apr apt apu apy ar- ara arb arp arr art aru ary at- ata atb atp atr att atu au- aua aub aup aur aut ay- aya ayp ayr ayt ayu b-p b-u baa bab bap bar bat bau bay bba bbb bbp bbr bbt bbu bby bpa bpb bpp bpr bpt bpu bpy bra brb brp brr brt bru bry bta btb btp btr btt btu bty bua bub bup bur but buu buy by- bya byp byr byt byu p-p paa pab pap par pat pau pay pba pbb pbp pbr pbt pbu pby ppa ppb ppp ppr ppt ppu pra prb prp prr prt pru pry pt- pta ptb ptp ptr ptt ptu pty pua pub pup pur put puu puy py- pya pyb pyr pyt pyu ra- raa rab rap rar rat rau ray rba rbb rbp rbr rbt rbu rpa rpb rpp rpr rpt rpu rra rrb rrp rrr rrt rru rta rtb rtp rtr rtt rtu rty rua rub rup rur rut ruu ruy ry- rya ryr ryu ryy taa tab tap tar tat tau tay tba tbb tbp tbr tbt tbu tpa tpb tpp tpr tpt tpu tra trb trp trr trt tru try tta ttb ttp ttr ttt ttu tty tua tub tup tur tut tuu tuy tya typ tyr tyt ua- uaa uab uap uar uat uau uay uba ubb ubp ubr ubt ubu uby up- upa upb upp upr upt upu ur- ura urb urp urr urt uru ury uta utb utp utr utt utu uty uua uur uut uuu uyu yaa yab yap yar yat yau yay ybp ybr yby ypa ypu yra yrp yrt yru yta ytp ytr ytt ytu yua yup yur yut yuu yuy yyb yyt yyu yyy