a-a a-b a-c a-q a-t aaa aab aac aae aak aao aaq aas aat aau ab- aba abb abc abe abk abo abq abs abt abu ac- aca acb acc ace ack aco acq acs act acu aea aeb aec aee aek aeo aeq aes aet aeu aka akb akc ake akk ako aks aku aoa aob aoc aoe aok aoo aos aot aou aqa aqc aqo aqs aqt as- asa asb asc ase ask aso asq ass ast asu at- ata atb atc ate ato ats att atu au- aua aub auc aue auk auo aus aut b-u baa bab bac bae bak bao baq bas bat bau bba bbb bbc bbe bbk bbo bbq bbs bbt bbu bca bcb bcc bce bck bco bcq bcs bct bcu be- bea beb bec bee bek beo beq bes bet beu bka bkb bkc bke bkk bko bkq bks bkt boa bob boc boe bok boo boq bos bot bou bqc bqe bqt bsa bsb bsc bse bsk bso bss bst bsu bta btb btc bte btk bto btq bts btt btu bua bub buc bue buk buo bus but buu c-- caa cab cac cae cak cao caq cas cat cau cba cbb cbc cbe cbk cbo cbq cbs cbt cbu cca ccb ccc cce cck cco ccs cct ccu ce- cea ceb cec cee cek ceo ceq ces cet ceu cka ckb ckc cko cks ckt co- coa cob coc coe cok coo coq cos cot cou cqa cqb cqc cqo cqs cqt csa csb csc cse csk cso csq css cst csu cta ctb ctc cte ctk cto ctq cts ctt ctu cua cub cuc cue cuk cuo cuq cus cut cuu eaa eab eac eae eak eao eas eat eau eba ebb ebc ebe ebk ebo ebq ebs ebt ebu ec- eca ecb ecc ece eck eco ecq ecs ect ecu eea eeb eec eee eek eeo ees eet eka ekb ekc eke eko eks ekt eku eo- eoa eob eoc eoe eok eoo eoq eos eot eou eqa eqe eqq eqs eqt equ es- esa esb esc ese esk eso esq ess est esu eta etb etc ete etk eto ets ett etu eu- eua eub euc eue eus eut k-t ka- kaa kab kac kae kak kao kas kat kau kba kbb kbc kbe kbk kbo kbs kbu kca kcb kcc kce kck kcs kct kcu ke- kea keb kec kee kek keo kes ket kkb kkc kke kkk kks kkt kku koa kob koc koe kok koo kos kot kou kqa ksa ksb ksc kse ksk kso kss kst ksu kta ktb ktc kte ktk kto kts ktt ktu kub kuc kue kuk kus kut kuu oaa oab oac oae oak oao oaq oas oat oau ob- oba obb obc obe obk obo obs obt obu oc- oca ocb occ ock oco ocs oct ocu oea oeb oec oee oeo oes oet oka okb okc oke okk oko oks oku oo- ooa oob ooc ook ooo oos oot oqb oqo os- osa osb osc ose osk oso osq oss ost osu ot- ota otb otc ote otk oto ots ott otu ou- oua ouc oue ouk ouo ous out qaa qac qas qat qau qba qbc qbe qbq qbs qca qcc qco qcs qct qec qee qeo qet qoo qos qqk qqq qqu qsa qsc qso qst qta qtc qto qtq qts qu- qua que quo qus qut saa sab sac sae sak sao saq sas sat sau sba sbb sbc sbe sbk sbo sbq sbs sbt sbu sca scb scc sce sck sco scs sct scu se- sea seb sec see sek seo seq ses set seu sk- ska skb skc ske skk sko skq sks skt sku soa sob soc soe sok soo soq sos sot sou sqa sqq sqs ss- ssa ssb ssc sse ssk sso ssq sss sst ssu sta stb stc ste stk sto stq sts stt stu sua sub suc sue suk suo suq sus sut suu taa tab tac tae tak tao taq tas tat tau tba tbb tbc tbe tbk tbo tbs tbt tbu tca tcb tcc tce tck tco tcs tct tcu te- tea teb tec tee tek teo teq tes tet teu tka tkb tkc tke tkk tko tks tkt to- toa tob toc toe tok too toq tos tot tou tqo tsa tsb tsc tse tsk tso tsq tss tst tsu tta ttb ttc tte ttk tto tts ttt ttu tua tub tuc tue tuk tuo tus tut tuu ua- uaa uab uac uae uak uao uaq uas uat uau uba ubb ubc ube ubk ubo ubs ubt ubu uca ucb ucc uce uck uco ucs uct ucu uea ueb uec uee ues uet uka ukb ukc uke ukk uku uoa uob uoc uoe uok uoo uos uot usa usb usc use usk uso uss ust usu uta utb utc ute utk uto uts utt utu uua uuc uue uus uut uuu