a-a a-b a-t aaa aab aad aam aan aar aat aau ab- aba abb abd abm abn abr abt abu ad- ada adb add adm adn adr adt adu ama amb amd amm amn amr amt amu an- ana anb and anm ann anr ant anu ar- ara arb ard arm arn arr art aru at- ata atb atd atm atn atr att atu au- aua aub aud aum aun aur aut b-u baa bab bad bam ban bar bat bau bba bbb bbd bbm bbn bbr bbt bbu bda bdb bdd bdm bdr bdt bdu bma bmb bmd bmm bmn bmr bmt bmu bna bnb bnd bnn bnr bnt bnu bra brb brd brm brn brr brt bru bta btb btd btm btn btr btt btu bua bub bud bum bun bur but buu daa dab dad dam dan dar dat dau dba dbb dbd dbm dbn dbr dbt dbu dda ddb ddd ddm ddn ddr ddt ddu dma dmb dmd dmm dmn dmr dmt dmu dna dnb dnd dnm dnn dnr dnt dra drb drd drm drn drr drt dru dta dtb dtd dtm dtn dtr dtt dtu dua dub dud dum dun dur dut m-r maa mab mad mam man mar mat mau mba mbb mbd mbm mbr mbt mbu mda mdb mdd mdm mdn mdr mdt mdu mma mmb mmd mmm mmn mmr mmt mmu mna mnb mnm mnn mnr mnt mnu mra mrb mrd mrm mrn mrr mrt mru mta mtb mtd mtm mtn mtr mtt mtu mua mub mud mum mun mur mut muu naa nab nad nam nan nar nat nau nba nbb nbd nbm nbn nbr nbt nbu nda ndb ndd ndm ndn ndr ndt ndu nma nmb nmd nmm nmn nmr nmt nmu nna nnb nnm nnn nnt nnu nra nrb nrd nrm nrn nrr nrt nru nta ntb ntd ntm ntn ntr ntt ntu nua nub nud num nun nur nut nuu ra- raa rab rad ram ran rar rat rau rba rbb rbd rbm rbn rbr rbt rbu rda rdb rdd rdm rdn rdr rdt rdu rma rmb rmd rmm rmn rmr rmt rna rnb rnd rnm rnn rnr rnt rnu rra rrb rrd rrm rrn rrr rrt rru rta rtb rtd rtm rtn rtr rtt rtu rua rub rud rum run rur rut ruu taa tab tad tam tan tar tat tau tba tbb tbd tbm tbn tbr tbt tbu tda tdb tdd tdm tdn tdr tdt tdu tma tmb tmd tmm tmn tmr tmt tmu tna tnb tnd tnm tnn tnr tnt tra trb trd trm trn trr trt tru tta ttb ttd ttm ttn ttr ttt ttu tua tub tud tum tun tur tut tuu ua- uaa uab uad uam uan uar uat uau uba ubb ubn ubr ubt ubu uda udb udd udm udn udr udt udu um- uma umb umd umm umn umr umt umu un- una unb und unm unn unr unt unu ur- ura urb urd urm urn urr urt uru uta utb utd utm utn utr utt utu uua uum uun uur uut uuu