-er -up a-a a-b a-c a-q a-t aaa aab aac aae aak aao aap aaq aar aat aau ab- aba abb abc abe abk abo abp abq abr abt abu ac- aca acb acc ace ack aco acp acq acr act acu aea aeb aec aee aek aeo aep aeq aer aet aeu aka akb akc ake akk ako akp akr aku aoa aob aoc aoe aok aoo aop aor aot aou ap- apa apb apc ape apk apo app apq apr apt apu aqa aqc aqo aqp aqr aqt ar- ara arb arc are ark aro arp arq arr art aru at- ata atb atc ate ato atp atr att atu au- aua aub auc aue auk auo aup aur aut b-p b-u baa bab bac bae bak bao bap baq bar bat bau bba bbb bbc bbe bbk bbo bbp bbq bbr bbt bbu bca bcb bcc bce bck bco bcp bcq bcr bct bcu be- bea beb bec bee bek beo bep beq ber bet beu bka bkb bkc bke bkk bko bkp bkq bkr bkt boa bob boc boe bok boo bop boq bor bot bou bpa bpb bpc bpe bpo bpp bpr bpt bpu bqc bqe bqp bqt bra brb bre brk bro brp brq brr brt bru bta btb btc bte btk bto btp btq btr btt btu bua bub buc bue buk buo bup bur but buu c-- caa cab cac cae cak cao cap caq car cat cau cba cbb cbc cbe cbk cbo cbp cbq cbr cbt cbu cca ccb ccc cce cck cco ccp ccr cct ccu ce- cea ceb cec cee cek ceo cep ceq cer cet ceu cka ckb ckc cko ckt co- coa cob coc coe cok coo cop coq cor cot cou cpa cpb cpc cpe cpk cpo cpp cpq cpr cpt cpu cqa cqb cqc cqo cqt cra crb crc cre crk cro crp crq crr crt cru cta ctb ctc cte ctk cto ctp ctq ctr ctt ctu cua cub cuc cue cuk cuo cup cuq cur cut cuu eaa eab eac eae eak eao eap ear eat eau eba ebb ebc ebe ebk ebo ebp ebq ebr ebt ebu ec- eca ecb ecc ece eck eco ecq ecr ect ecu eea eeb eec eee eek eeo eep eer eet eka ekb ekc eke eko ekp ekr ekt eku eo- eoa eob eoc eoe eok eoo eop eoq eor eot eou ep- epa epb epc epe epo epp epq epr ept epu eqa eqe eqp eqq eqt equ era erb erc ere erk ero erp erq err ert eru eta etb etc ete etk eto etp etr ett etu eu- eua eub euc eue eup eur eut k-t ka- kaa kab kac kae kak kao kap kar kat kau kba kbb kbc kbe kbk kbo kbp kbr kbu kca kcb kcc kce kck kcp kcr kct kcu ke- kea keb kec kee kek keo kep ker ket kkb kkc kke kkk kkp kkr kkt kku koa kob koc koe kok koo kop kor kot kou kpa kpc kpe kpk kpo kpp kpq kpr kpt kpu kqa kra krc krk kro krp krr krt kru kta ktb ktc kte ktk kto ktp ktr ktt ktu kub kuc kue kuk kup kur kut kuu oaa oab oac oae oak oao oap oaq oar oat oau ob- oba obb obc obe obk obo obp obr obt obu oc- oca ocb occ ock oco ocp ocr oct ocu oea oeb oec oee oeo oep oer oet oka okb okc oke okk oko okp okr oku oo- ooa oob ooc ook ooo oop oor oot op- opa opb opc ope opk opo opp opq opr opt oqb oqo or- ora orb orc ore ork oro orp orr ort oru ot- ota otb otc ote otk oto otp otr ott otu ou- oua ouc oue ouk ouo oup our out p-p paa pab pac pae pak pao pap paq par pat pau pba pbb pbc pbe pbk pbo pbp pbr pbt pbu pca pcb pcc pce pck pco pcp pcq pcr pct pcu pea peb pec pee pek peo pep per pet peu pka pkb pkc pke pko pkp pkr pkt pku poa pob poc poe pok poo pop por pot pou ppa ppb ppc ppe ppk ppo ppp ppq ppr ppt ppu pqq pqr pra prb prc pre prk pro prp prq prr prt pru pt- pta ptb ptc pte ptk pto ptp ptq ptr ptt ptu pua pub puc pue puk pup pur put puu qaa qac qap qar qat qau qba qbc qbe qbq qca qcc qco qcp qct qec qee qeo qep qet qoo qop qor qpc qpp qpr qqk qqq qqu qra qrb qrc qre qrp qrt qru qta qtc qto qtq qtr qu- qua que quo qur qut ra- raa rab rac rae rak rao rap raq rar rat rau rba rbb rbc rbe rbk rbo rbp rbr rbt rbu rca rcb rcc rce rco rcp rcr rct rcu re- rea reb rec ree rek reo rep req rer ret reu rkb rkc rke rkk rko rkp rkt rku roa rob roc roe rok roo rop ror rot rou rpa rpb rpc rpe rpk rpo rpp rpr rpt rpu rqc rra rrb rrc rrk rrp rrq rrr rrt rru rta rtb rtc rte rtk rto rtp rtq rtr rtt rtu rua rub ruc rue ruk ruo rup rur rut ruu taa tab tac tae tak tao tap taq tar tat tau tba tbb tbc tbe tbk tbo tbp tbr tbt tbu tca tcb tcc tce tck tco tcp tcr tct tcu te- tea teb tec tee tek teo tep teq ter tet teu tka tkb tkc tke tkk tko tkp tkr tkt to- toa tob toc toe tok too top toq tor tot tou tpa tpb tpc tpe tpk tpo tpp tpq tpr tpt tpu tqo tra trb trc tre trk tro trp trq trr trt tru tta ttb ttc tte ttk tto ttp