-er a-a a-b a-c a-q a-t aaa aab aac aae aak aaq aar aas aat aau ab- aba abb abc abe abk abq abr abs abt abu ac- aca acb acc ace ack acq acr acs act acu aea aeb aec aee aek aeq aer aes aet aeu aka akb akc ake akk akr aks aku aqa aqc aqr aqs aqt ar- ara arb arc are ark arq arr ars art aru as- asa asb asc ase ask asq asr ass ast asu at- ata atb atc ate atr ats att atu au- aua aub auc aue auk aur aus aut b-u baa bab bac bae bak baq bar bas bat bau bba bbb bbc bbe bbk bbq bbr bbs bbt bbu bca bcb bcc bce bck bcq bcr bcs bct bcu be- bea beb bec bee bek beq ber bes bet beu bka bkb bkc bke bkk bkq bkr bks bkt bqc bqe bqt bra brb bre brk brq brr brs brt bru bsa bsb bsc bse bsk bsr bss bst bsu bta btb btc bte btk btq btr bts btt btu bua bub buc bue buk bur bus but buu c-- caa cab cac cae cak caq car cas cat cau cba cbb cbc cbe cbk cbq cbr cbs cbt cbu cca ccb ccc cce cck ccr ccs cct ccu ce- cea ceb cec cee cek ceq cer ces cet ceu cka ckb ckc cks ckt cqa cqb cqc cqs cqt cra crb crc cre crk crq crr crs crt cru csa csb csc cse csk csq csr css cst csu cta ctb ctc cte ctk ctq ctr cts ctt ctu cua cub cuc cue cuk cuq cur cus cut cuu eaa eab eac eae eak ear eas eat eau eba ebb ebc ebe ebk ebq ebr ebs ebt ebu ec- eca ecb ecc ece eck ecq ecr ecs ect ecu eea eeb eec eee eek eer ees eet eka ekb ekc eke ekr eks ekt eku eqa eqe eqq eqs eqt equ era erb erc ere erk erq err ers ert eru es- esa esb esc ese esk esq esr ess est esu eta etb etc ete etk etr ets ett etu eu- eua eub euc eue eur eus eut k-t ka- kaa kab kac kae kak kar kas kat kau kba kbb kbc kbe kbk kbr kbs kbu kca kcb kcc kce kck kcr kcs kct kcu ke- kea keb kec kee kek ker kes ket kkb kkc kke kkk kkr kks kkt kku kqa kra krc krk krr krs krt kru ksa ksb ksc kse ksk ksr kss kst ksu kta ktb ktc kte ktk ktr kts ktt ktu kub kuc kue kuk kur kus kut kuu qaa qac qar qas qat qau qba qbc qbe qbq qbs qca qcc qcs qct qec qee qet qqk qqq qqu qra qrb qrc qre qrs qrt qru qsa qsc qsr qst qta qtc qtq qtr qts qu- qua que qur qus qut ra- raa rab rac rae rak raq rar ras rat rau rba rbb rbc rbe rbk rbr rbs rbt rbu rca rcb rcc rce rcr rcs rct rcu re- rea reb rec ree rek req rer res ret reu rkb rkc rke rkk rks rkt rku rqc rqs rra rrb rrc rrk rrq rrr rrs rrt rru rsa rsb rsc rse rsk rsq rsr rss rst rsu rta rtb rtc rte rtk rtq rtr rts rtt rtu rua rub ruc rue ruk rur rus rut ruu saa sab sac sae sak saq sar sas sat sau sba sbb sbc sbe sbk sbq sbr sbs sbt sbu sca scb scc sce sck scr scs sct scu se- sea seb sec see sek seq ser ses set seu sk- ska skb skc ske skk skq skr sks skt sku sqa sqq sqr sqs sr- sra srb src sre srk srq srr srs srt ss- ssa ssb ssc sse ssk ssq ssr sss sst ssu sta stb stc ste stk stq str sts stt stu sua sub suc sue suk suq sur sus sut suu taa tab tac tae tak taq tar tas tat tau tba tbb tbc tbe tbk tbr tbs tbt tbu tca tcb tcc tce tck tcr tcs tct tcu te- tea teb tec tee tek teq ter tes tet teu tka tkb tkc tke tkk tkr tks tkt tra trb trc tre trk trq trr trs trt tru tsa tsb tsc tse tsk tsq tsr tss tst tsu tta ttb ttc tte ttk ttr tts ttt ttu tua tub tuc tue tuk tur tus tut tuu ua- uaa uab uac uae uak uaq uar uas uat uau uba ubb ubc ube ubk ubr ubs ubt ubu uca ucb ucc uce uck ucr ucs uct ucu uea ueb uec uee uer ues uet uka ukb ukc uke ukk ukr uku ur- ura urb urc ure urk urr urs urt uru usa usb usc use usk usr uss ust usu uta utb utc ute utk utr uts utt utu uua uuc uue uur uus uut uuu