a-a a-b a-c a-t aaa aab aac aam aan aao aar aas aat aau ab- aba abb abc abm abn abo abr abs abt abu ac- aca acb acc acm acn aco acr acs act acu ama amb amc amm amn amo amr ams amt amu an- ana anb anc anm ann ano anr ans ant anu aoa aob aoc aom aon aoo aor aos aot aou ar- ara arb arc arm arn aro arr ars art aru as- asa asb asc asm asn aso asr ass ast asu at- ata atb atc atm atn ato atr ats att atu au- aua aub auc aum aun auo aur aus aut b-u baa bab bac bam ban bao bar bas bat bau bba bbb bbc bbm bbn bbo bbr bbs bbt bbu bca bcb bcc bcm bcn bco bcr bcs bct bcu bma bmb bmc bmm bmn bmo bmr bms bmt bmu bna bnb bnc bnn bno bnr bns bnt bnu boa bob boc bom bon boo bor bos bot bou bra brb brm brn bro brr brs brt bru bsa bsb bsc bsm bsn bso bsr bss bst bsu bta btb btc btm btn bto btr bts btt btu bua bub buc bum bun buo bur bus but buu c-- caa cab cac cam can cao car cas cat cau cba cbb cbc cbm cbn cbo cbr cbs cbt cbu cca ccb ccc ccm ccn cco ccr ccs cct ccu cma cmb cmc cmm cmn cmo cmr cms cmt cmu cn- cna cnb cnc cnm cnn cno cnr cns cnt cnu co- coa cob coc com con coo cor cos cot cou cra crb crc crm crn cro crr crs crt cru csa csb csc csm csn cso csr css cst csu cta ctb ctc ctm ctn cto ctr cts ctt ctu cua cub cuc cum cun cuo cur cus cut cuu m-o m-r maa mab mac mam man mao mar mas mat mau mba mbb mbc mbm mbo mbr mbs mbt mbu mc- mca mcb mcc mcm mcn mco mcr mcs mct mcu mma mmb mmc mmm mmn mmo mmr mms mmt mmu mna mnb mnc mnm mnn mno mnr mns mnt mnu moa mob moc mom mon moo mor mos mot mou mra mrb mrc mrm mrn mro mrr mrs mrt mru msa msb msc msm msn mso msr mss mst msu mta mtb mtc mtm mtn mto mtr mts mtt mtu mua mub muc mum mun mur mus mut muu naa nab nac nam nan nao nar nas nat nau nba nbb nbc nbm nbn nbo nbr nbs nbt nbu nca ncb ncc ncm ncn nco ncr ncs nct ncu nma nmb nmc nmm nmn nmo nmr nms nmt nmu nna nnb nnc nnm nnn nno nns nnt nnu no- noa nob noc nom non noo nor nos not nou nra nrb nrc nrm nrn nro nrr nrs nrt nru nsa nsb nsc nsm nsn nso nsr nss nst nsu nta ntb ntc ntm ntn nto ntr nts ntt ntu nua nub nuc num nun nuo nur nus nut nuu oaa oab oac oam oan oao oar oas oat oau ob- oba obb obc obm obn obo obr obs obt obu oc- oca ocb occ ocm ocn oco ocr ocs oct ocu om- oma omb omc omm omn omo omr oms omt omu on- ona onb onc onn ono onr ons ont onu oo- ooa oob ooc oom oon ooo oor oos oot or- ora orb orc orm orn oro orr ors ort oru os- osa osb osc osm osn oso osr oss ost osu ot- ota otb otc otm otn oto otr ots ott otu ou- oua ouc oum oun ouo our ous out ra- raa rab rac ram ran rao rar ras rat rau rba rbb rbc rbm rbn rbo rbr rbs rbt rbu rca rcb rcc rcm rcn rco rcr rcs rct rcu rma rmb rmc rmm rmn rmo rmr rms rmt rna rnb rnc rnm rnn rno rnr rns rnt rnu roa rob roc rom ron roo ror ros rot rou rra rrb rrc rrm rrn rrr rrs rrt rru rsa rsb rsc rsm rsn rso rsr rss rst rsu rta rtb rtc rtm rtn rto rtr rts rtt rtu rua rub ruc rum run ruo rur rus rut ruu saa sab sac sam san sao sar sas sat sau sba sbb sbc sbm sbn sbo sbr sbs sbt sbu sca scb scc scm scn sco scr scs sct scu sma smb smc smm smn smo smr sms smt smu sna snb snc snm snn sno snr sns snt snu soa sob soc som son soo sor sos sot sou sr- sra srb src srm srn sro srr srs srt ss- ssa ssb ssc ssm ssn sso ssr sss sst ssu sta stb stc stm stn sto str sts stt stu sua sub suc sum sun suo sur sus sut suu taa tab tac tam tan tao tar tas tat tau tba tbb tbc tbm tbn tbo tbr tbs tbt tbu tca tcb tcc tcm tcn tco tcr tcs tct tcu tma tmb tmc tmm tmn tmo tmr tms tmt tmu tna tnb tnc tnm tnn tno tnr tns tnt to- toa tob toc tom ton too tor tos tot tou tra trb trc trm trn tro trr trs trt tru tsa tsb tsc tsm tsn tso tsr tss tst tsu tta ttb ttc ttm ttn tto ttr tts ttt ttu tua tub tuc tum tun tuo tur tus tut tuu ua- uaa uab uac uam uan uao uar uas uat uau uba ubb ubc ubn ubo ubr ubs ubt ubu uca ucb ucc ucm ucn uco ucr ucs uct ucu um- uma umb umc umm umn umo umr ums umt umu un- una unb unc unm unn uno unr uns unt unu uoa uob uoc uom uon uoo uor uos uot ur- ura urb urc urm urn uro urr urs urt uru usa usb usc usm usn uso usr uss ust usu