a-a a-b a-c a-t aaa aab aac aad aam aat aau ab- aba abb abc abd abm abt abu ac- aca acb acc acd acm act acu ad- ada adb adc add adm adt adu ama amb amc amd amm amt amu at- ata atb atc atd atm att atu au- aua aub auc aud aum aut b-u baa bab bac bad bam bat bau bba bbb bbc bbd bbm bbt bbu bca bcb bcc bcd bcm bct bcu bda bdb bdc bdd bdm bdt bdu bma bmb bmc bmd bmm bmt bmu bta btb btc btd btm btt btu bua bub buc bud bum but buu c-- caa cab cac cad cam cat cau cba cbb cbc cbd cbm cbt cbu cca ccb ccc ccd ccm cct ccu cda cdb cdc cdd cdm cdt cdu cma cmb cmc cmd cmm cmt cmu cta ctb ctc ctd ctm ctt ctu cua cub cuc cud cum cut cuu daa dab dac dad dam dat dau dba dbb dbc dbd dbm dbt dbu dca dcb dcc dcd dcm dct dcu dda ddb ddc ddd ddm ddt ddu dma dmb dmc dmd dmm dmt dmu dta dtb dtc dtd dtm dtt dtu dua dub duc dud dum dut maa mab mac mad mam mat mau mba mbb mbc mbd mbm mbt mbu mc- mca mcb mcc mcd mcm mct mcu mda mdb mdc mdd mdm mdt mdu mma mmb mmc mmd mmm mmt mmu mta mtb mtc mtd mtm mtt mtu mua mub muc mud mum mut muu taa tab tac tad tam tat tau tba tbb tbc tbd tbm tbt tbu tca tcb tcc tcd tcm tct tcu tda tdb tdc tdd tdm tdt tdu tma tmb tmc tmd tmm tmt tmu tta ttb ttc ttd ttm ttt ttu tua tub tuc tud tum tut tuu ua- uaa uab uac uad uam uat uau uba ubb ubc ubt ubu uca ucb ucc ucd ucm uct ucu uda udb udc udd udm udt udu um- uma umb umc umd umm umt umu uta utb utc utd utm utt utu uua uuc uum uut uuu