-up a-a a-b a-t aaa aab aan aao aap aar aat aau ab- aba abb abn abo abp abr abt abu an- ana anb ann ano anp anr ant anu aoa aob aon aoo aop aor aot aou ap- apa apb apn apo app apr apt apu ar- ara arb arn aro arp arr art aru at- ata atb atn ato atp atr att atu au- aua aub aun auo aup aur aut b-p b-u baa bab ban bao bap bar bat bau bba bbb bbn bbo bbp bbr bbt bbu bna bnb bnn bno bnp bnr bnt bnu boa bob bon boo bop bor bot bou bpa bpb bpn bpo bpp bpr bpt bpu bra brb brn bro brp brr brt bru bta btb btn bto btp btr btt btu bua bub bun buo bup bur but buu naa nab nan nao nap nar nat nau nba nbb nbn nbo nbp nbr nbt nbu nna nnb nnn nno nnp nnt nnu no- noa nob non noo nop nor not nou npa npb npn npo npp npr npt npu nra nrb nrn nro nrp nrr nrt nru nta ntb ntn nto ntp ntr ntt ntu nua nub nun nuo nup nur nut nuu oaa oab oan oao oap oar oat oau ob- oba obb obn obo obp obr obt obu on- ona onb onn ono onp onr ont onu oo- ooa oob oon ooo oop oor oot op- opa opb opn opo opp opr opt or- ora orb orn oro orp orr ort oru ot- ota otb otn oto otp otr ott otu ou- oua oun ouo oup our out p-p paa pab pan pao pap par pat pau pba pbb pbn pbo pbp pbr pbt pbu pn- pna pnb pnn pno pnp pnr pnt pnu poa pob pon poo pop por pot pou ppa ppb ppn ppo ppp ppr ppt ppu pra prb prn pro prp prr prt pru pt- pta ptb ptn pto ptp ptr ptt ptu pua pub pun pup pur put puu ra- raa rab ran rao rap rar rat rau rba rbb rbn rbo rbp rbr rbt rbu rna rnb rnn rno rnp rnr rnt rnu roa rob ron roo rop ror rot rou rpa rpb rpn rpo rpp rpr rpt rpu rra rrb rrn rrp rrr rrt rru rta rtb rtn rto rtp rtr rtt rtu rua rub run ruo rup rur rut ruu taa tab tan tao tap tar tat tau tba tbb tbn tbo tbp tbr tbt tbu tna tnb tnn tno tnp tnr tnt to- toa tob ton too top tor tot tou tpa tpb tpn tpo tpp tpr tpt tpu tra trb trn tro trp trr trt tru tta ttb ttn tto ttp ttr ttt ttu tua tub tun tuo tup tur tut tuu ua- uaa uab uan uao uap uar uat uau uba ubb ubn ubo ubp ubr ubt ubu un- una unb unn uno unp unr unt unu uoa uob uon uoo uop uor uot up- upa upb upn upo upp upr upt upu ur- ura urb urn uro urp urr urt uru uta utb utn uto utp utr utt utu uua uun uur uut uuu