a-a a-b a-c a-t aaa aab aac aam aan aao aat aau ab- aba abb abc abm abn abo abt abu ac- aca acb acc acm acn aco act acu ama amb amc amm amn amo amt amu an- ana anb anc anm ann ano ant anu aoa aob aoc aom aon aoo aot aou at- ata atb atc atm atn ato att atu au- aua aub auc aum aun auo aut b-u baa bab bac bam ban bao bat bau bba bbb bbc bbm bbn bbo bbt bbu bca bcb bcc bcm bcn bco bct bcu bma bmb bmc bmm bmn bmo bmt bmu bna bnb bnc bnn bno bnt bnu boa bob boc bom bon boo bot bou bta btb btc btm btn bto btt btu bua bub buc bum bun buo but buu c-- caa cab cac cam can cao cat cau cba cbb cbc cbm cbn cbo cbt cbu cca ccb ccc ccm ccn cco cct ccu cma cmb cmc cmm cmn cmo cmt cmu cn- cna cnb cnc cnm cnn cno cnt cnu co- coa cob coc com con coo cot cou cta ctb ctc ctm ctn cto ctt ctu cua cub cuc cum cun cuo cut cuu m-o maa mab mac mam man mao mat mau mba mbb mbc mbm mbo mbt mbu mc- mca mcb mcc mcm mcn mco mct mcu mma mmb mmc mmm mmn mmo mmt mmu mna mnb mnc mnm mnn mno mnt mnu moa mob moc mom mon moo mot mou mta mtb mtc mtm mtn mto mtt mtu mua mub muc mum mun mut muu naa nab nac nam nan nao nat nau nba nbb nbc nbm nbn nbo nbt nbu nca ncb ncc ncm ncn nco nct ncu nma nmb nmc nmm nmn nmo nmt nmu nna nnb nnc nnm nnn nno nnt nnu no- noa nob noc nom non noo not nou nta ntb ntc ntm ntn nto ntt ntu nua nub nuc num nun nuo nut nuu oaa oab oac oam oan oao oat oau ob- oba obb obc obm obn obo obt obu oc- oca ocb occ ocm ocn oco oct ocu om- oma omb omc omm omn omo omt omu on- ona onb onc onn ono ont onu oo- ooa oob ooc oom oon ooo oot ot- ota otb otc otm otn oto ott otu ou- oua ouc oum oun ouo out taa tab tac tam tan tao tat tau tba tbb tbc tbm tbn tbo tbt tbu tca tcb tcc tcm tcn tco tct tcu tma tmb tmc tmm tmn tmo tmt tmu tna tnb tnc tnm tnn tno tnt to- toa tob toc tom ton too tot tou tta ttb ttc ttm ttn tto ttt ttu tua tub tuc tum tun tuo tut tuu ua- uaa uab uac uam uan uao uat uau uba ubb ubc ubn ubo ubt ubu uca ucb ucc ucm ucn uco uct ucu um- uma umb umc umm umn umo umt umu un- una unb unc unm unn uno unt unu uoa uob uoc uom uon uoo uot uta utb utc utm utn uto utt utu uua uuc uum uun uut uuu