a-a a-b a-t aaa aab aad aam aao aat aau ab- aba abb abd abm abo abt abu ad- ada adb add adm ado adt adu ama amb amd amm amo amt amu aoa aob aod aom aoo aot aou at- ata atb atd atm ato att atu au- aua aub aud aum auo aut b-u baa bab bad bam bao bat bau bba bbb bbd bbm bbo bbt bbu bda bdb bdd bdm bdo bdt bdu bma bmb bmd bmm bmo bmt bmu boa bob bod bom boo bot bou bta btb btd btm bto btt btu bua bub bud bum buo but buu daa dab dad dam dao dat dau dba dbb dbd dbm dbo dbt dbu dda ddb ddd ddm ddo ddt ddu dma dmb dmd dmm dmo dmt dmu doa dob dod dom doo dot dou dta dtb dtd dtm dto dtt dtu dua dub dud dum duo dut m-o maa mab mad mam mao mat mau mba mbb mbd mbm mbo mbt mbu mda mdb mdd mdm mdo mdt mdu mma mmb mmd mmm mmo mmt mmu moa mob mod mom moo mot mou mta mtb mtd mtm mto mtt mtu mua mub mud mum mut muu oaa oab oad oam oao oat oau ob- oba obb obd obm obo obt obu oda odb odd odm odo odt odu om- oma omb omd omm omo omt omu oo- ooa oob ood oom ooo oot ot- ota otb otd otm oto ott otu ou- oua oud oum ouo out taa tab tad tam tao tat tau tba tbb tbd tbm tbo tbt tbu tda tdb tdd tdm tdo tdt tdu tma tmb tmd tmm tmo tmt tmu to- toa tob tod tom too tot tou tta ttb ttd ttm tto ttt ttu tua tub tud tum tuo tut tuu ua- uaa uab uad uam uao uat uau uba ubb ubo ubt ubu uda udb udd udm udo udt udu um- uma umb umd umm umo umt umu uoa uob uod uom uoo uot uta utb utd utm uto utt utu uua uum uut uuu