a-a a-b a-c a-t aaa aab aac aam aan aao aar aat aau ab- aba abb abc abm abn abo abr abt abu ac- aca acb acc acm acn aco acr act acu ama amb amc amm amn amo amr amt amu an- ana anb anc anm ann ano anr ant anu aoa aob aoc aom aon aoo aor aot aou ar- ara arb arc arm arn aro arr art aru at- ata atb atc atm atn ato atr att atu au- aua aub auc aum aun auo aur aut b-u baa bab bac bam ban bao bar bat bau bba bbb bbc bbm bbn bbo bbr bbt bbu bca bcb bcc bcm bcn bco bcr bct bcu bma bmb bmc bmm bmn bmo bmr bmt bmu bna bnb bnc bnn bno bnr bnt bnu boa bob boc bom bon boo bor bot bou bra brb brm brn bro brr brt bru bta btb btc btm btn bto btr btt btu bua bub buc bum bun buo bur but buu c-- caa cab cac cam can cao car cat cau cba cbb cbc cbm cbn cbo cbr cbt cbu cca ccb ccc ccm ccn cco ccr cct ccu cma cmb cmc cmm cmn cmo cmr cmt cmu cn- cna cnb cnc cnm cnn cno cnr cnt cnu co- coa cob coc com con coo cor cot cou cra crb crc crm crn cro crr crt cru cta ctb ctc ctm ctn cto ctr ctt ctu cua cub cuc cum cun cuo cur cut cuu m-o m-r maa mab mac mam man mao mar mat mau mba mbb mbc mbm mbo mbr mbt mbu mc- mca mcb mcc mcm mcn mco mcr mct mcu mma mmb mmc mmm mmn mmo mmr mmt mmu mna mnb mnc mnm mnn mno mnr mnt mnu moa mob moc mom mon moo mor mot mou mra mrb mrc mrm mrn mro mrr mrt mru mta mtb mtc mtm mtn mto mtr mtt mtu mua mub muc mum mun mur mut muu naa nab nac nam nan nao nar nat nau nba nbb nbc nbm nbn nbo nbr nbt nbu nca ncb ncc ncm ncn nco ncr nct ncu nma nmb nmc nmm nmn nmo nmr nmt nmu nna nnb nnc nnm nnn nno nnt nnu no- noa nob noc nom non noo nor not nou nra nrb nrc nrm nrn nro nrr nrt nru nta ntb ntc ntm ntn nto ntr ntt ntu nua nub nuc num nun nuo nur nut nuu oaa oab oac oam oan oao oar oat oau ob- oba obb obc obm obn obo obr obt obu oc- oca ocb occ ocm ocn oco ocr oct ocu om- oma omb omc omm omn omo omr omt omu on- ona onb onc onn ono onr ont onu oo- ooa oob ooc oom oon ooo oor oot or- ora orb orc orm orn oro orr ort oru ot- ota otb otc otm otn oto otr ott otu ou- oua ouc oum oun ouo our out ra- raa rab rac ram ran rao rar rat rau rba rbb rbc rbm rbn rbo rbr rbt rbu rca rcb rcc rcm rcn rco rcr rct rcu rma rmb rmc rmm rmn rmo rmr rmt rna rnb rnc rnm rnn rno rnr rnt rnu roa rob roc rom ron roo ror rot rou rra rrb rrc rrm rrn rrr rrt rru rta rtb rtc rtm rtn rto rtr rtt rtu rua rub ruc rum run ruo rur rut ruu taa tab tac tam tan tao tar tat tau tba tbb tbc tbm tbn tbo tbr tbt tbu tca tcb tcc tcm tcn tco tcr tct tcu tma tmb tmc tmm tmn tmo tmr tmt tmu tna tnb tnc tnm tnn tno tnr tnt to- toa tob toc tom ton too tor tot tou tra trb trc trm trn tro trr trt tru tta ttb ttc ttm ttn tto ttr ttt ttu tua tub tuc tum tun tuo tur tut tuu ua- uaa uab uac uam uan uao uar uat uau uba ubb ubc ubn ubo ubr ubt ubu uca ucb ucc ucm ucn uco ucr uct ucu um- uma umb umc umm umn umo umr umt umu un- una unb unc unm unn uno unr unt unu uoa uob uoc uom uon uoo uor uot ur- ura urb urc urm urn uro urr urt uru uta utb utc utm utn uto utr utt utu uua uuc uum uun uur uut uuu