-up a-a a-b a-t aaa aab aan aap aar aat aau ab- aba abb abn abp abr abt abu an- ana anb ann anp anr ant anu ap- apa apb apn app apr apt apu ar- ara arb arn arp arr art aru at- ata atb atn atp atr att atu au- aua aub aun aup aur aut b-p b-u baa bab ban bap bar bat bau bba bbb bbn bbp bbr bbt bbu bna bnb bnn bnp bnr bnt bnu bpa bpb bpn bpp bpr bpt bpu bra brb brn brp brr brt bru bta btb btn btp btr btt btu bua bub bun bup bur but buu naa nab nan nap nar nat nau nba nbb nbn nbp nbr nbt nbu nna nnb nnn nnp nnt nnu npa npb npn npp npr npt npu nra nrb nrn nrp nrr nrt nru nta ntb ntn ntp ntr ntt ntu nua nub nun nup nur nut nuu p-p paa pab pan pap par pat pau pba pbb pbn pbp pbr pbt pbu pn- pna pnb pnn pnp pnr pnt pnu ppa ppb ppn ppp ppr ppt ppu pra prb prn prp prr prt pru pt- pta ptb ptn ptp ptr ptt ptu pua pub pun pup pur put puu ra- raa rab ran rap rar rat rau rba rbb rbn rbp rbr rbt rbu rna rnb rnn rnp rnr rnt rnu rpa rpb rpn rpp rpr rpt rpu rra rrb rrn rrp rrr rrt rru rta rtb rtn rtp rtr rtt rtu rua rub run rup rur rut ruu taa tab tan tap tar tat tau tba tbb tbn tbp tbr tbt tbu tna tnb tnn tnp tnr tnt tpa tpb tpn tpp tpr tpt tpu tra trb trn trp trr trt tru tta ttb ttn ttp ttr ttt ttu tua tub tun tup tur tut tuu ua- uaa uab uan uap uar uat uau uba ubb ubn ubp ubr ubt ubu un- una unb unn unp unr unt unu up- upa upb upn upp upr upt upu ur- ura urb urn urp urr urt uru uta utb utn utp utr utt utu uua uun uur uut uuu