a-a a-b a-t aaa aab aad aam aao aar aat aau ab- aba abb abd abm abo abr abt abu ad- ada adb add adm ado adr adt adu ama amb amd amm amo amr amt amu aoa aob aod aom aoo aor aot aou ar- ara arb ard arm aro arr art aru at- ata atb atd atm ato atr att atu au- aua aub aud aum auo aur aut b-u baa bab bad bam bao bar bat bau bba bbb bbd bbm bbo bbr bbt bbu bda bdb bdd bdm bdo bdr bdt bdu bma bmb bmd bmm bmo bmr bmt bmu boa bob bod bom boo bor bot bou bra brb brd brm bro brr brt bru bta btb btd btm bto btr btt btu bua bub bud bum buo bur but buu daa dab dad dam dao dar dat dau dba dbb dbd dbm dbo dbr dbt dbu dda ddb ddd ddm ddo ddr ddt ddu dma dmb dmd dmm dmo dmr dmt dmu doa dob dod dom doo dor dot dou dra drb drd drm dro drr drt dru dta dtb dtd dtm dto dtr dtt dtu dua dub dud dum duo dur dut m-o m-r maa mab mad mam mao mar mat mau mba mbb mbd mbm mbo mbr mbt mbu mda mdb mdd mdm mdo mdr mdt mdu mma mmb mmd mmm mmo mmr mmt mmu moa mob mod mom moo mor mot mou mra mrb mrd mrm mro mrr mrt mru mta mtb mtd mtm mto mtr mtt mtu mua mub mud mum mur mut muu oaa oab oad oam oao oar oat oau ob- oba obb obd obm obo obr obt obu oda odb odd odm odo odr odt odu om- oma omb omd omm omo omr omt omu oo- ooa oob ood oom ooo oor oot or- ora orb ord orm oro orr ort oru ot- ota otb otd otm oto otr ott otu ou- oua oud oum ouo our out ra- raa rab rad ram rao rar rat rau rba rbb rbd rbm rbo rbr rbt rbu rda rdb rdd rdm rdo rdr rdt rdu rma rmb rmd rmm rmo rmr rmt roa rob rod rom roo ror rot rou rra rrb rrd rrm rrr rrt rru rta rtb rtd rtm rto rtr rtt rtu rua rub rud rum ruo rur rut ruu taa tab tad tam tao tar tat tau tba tbb tbd tbm tbo tbr tbt tbu tda tdb tdd tdm tdo tdr tdt tdu tma tmb tmd tmm tmo tmr tmt tmu to- toa tob tod tom too tor tot tou tra trb trd trm tro trr trt tru tta ttb ttd ttm tto ttr ttt ttu tua tub tud tum tuo tur tut tuu ua- uaa uab uad uam uao uar uat uau uba ubb ubo ubr ubt ubu uda udb udd udm udo udr udt udu um- uma umb umd umm umo umr umt umu uoa uob uod uom uoo uor uot ur- ura urb urd urm uro urr urt uru uta utb utd utm uto utr utt utu uua uum uur uut uuu