-er -up a-a a-b a-c a-t aaa aab aac aae aak aap aar aas aat aau ab- aba abb abc abe abk abp abr abs abt abu ac- aca acb acc ace ack acp acr acs act acu aea aeb aec aee aek aep aer aes aet aeu aka akb akc ake akk akp akr aks aku ap- apa apb apc ape apk app apr aps apt apu ar- ara arb arc are ark arp arr ars art aru as- asa asb asc ase ask asp asr ass ast asu at- ata atb atc ate atp atr ats att atu au- aua aub auc aue auk aup aur aus aut b-p b-u baa bab bac bae bak bap bar bas bat bau bba bbb bbc bbe bbk bbp bbr bbs bbt bbu bca bcb bcc bce bck bcp bcr bcs bct bcu be- bea beb bec bee bek bep ber bes bet beu bka bkb bkc bke bkk bkp bkr bks bkt bpa bpb bpc bpe bpp bpr bps bpt bpu bra brb bre brk brp brr brs brt bru bsa bsb bsc bse bsk bsp bsr bss bst bsu bta btb btc bte btk btp btr bts btt btu bua bub buc bue buk bup bur bus but buu c-- caa cab cac cae cak cap car cas cat cau cba cbb cbc cbe cbk cbp cbr cbs cbt cbu cca ccb ccc cce cck ccp ccr ccs cct ccu ce- cea ceb cec cee cek cep cer ces cet ceu cka ckb ckc cks ckt cpa cpb cpc cpe cpk cpp cpr cps cpt cpu cra crb crc cre crk crp crr crs crt cru csa csb csc cse csk csp csr css cst csu cta ctb ctc cte ctk ctp ctr cts ctt ctu cua cub cuc cue cuk cup cur cus cut cuu eaa eab eac eae eak eap ear eas eat eau eba ebb ebc ebe ebk ebp ebr ebs ebt ebu ec- eca ecb ecc ece eck ecr ecs ect ecu eea eeb eec eee eek eep eer ees eet eka ekb ekc eke ekp ekr eks ekt eku ep- epa epb epc epe epp epr eps ept epu era erb erc ere erk erp err ers ert eru es- esa esb esc ese esk esp esr ess est esu eta etb etc ete etk etp etr ets ett etu eu- eua eub euc eue eup eur eus eut k-t ka- kaa kab kac kae kak kap kar kas kat kau kba kbb kbc kbe kbk kbp kbr kbs kbu kca kcb kcc kce kck kcp kcr kcs kct kcu ke- kea keb kec kee kek kep ker kes ket kkb kkc kke kkk kkp kkr kks kkt kku kpa kpc kpe kpk kpp kpr kps kpt kpu kra krc krk krp krr krs krt kru ksa ksb ksc kse ksk ksp ksr kss kst ksu kta ktb ktc kte ktk ktp ktr kts ktt ktu kub kuc kue kuk kup kur kus kut kuu p-p paa pab pac pae pak pap par pas pat pau pba pbb pbc pbe pbk pbp pbr pbs pbt pbu pca pcb pcc pce pck pcp pcr pcs pct pcu pea peb pec pee pek pep per pes pet peu pka pkb pkc pke pkp pkr pks pkt pku ppa ppb ppc ppe ppk ppp ppr pps ppt ppu pra prb prc pre prk prp prr prs prt pru ps- psa psb psc pse psk psp psr pss pst psu pt- pta ptb ptc pte ptk ptp ptr pts ptt ptu pua pub puc pue puk pup pur pus put puu ra- raa rab rac rae rak rap rar ras rat rau rba rbb rbc rbe rbk rbp rbr rbs rbt rbu rca rcb rcc rce rcp rcr rcs rct rcu re- rea reb rec ree rek rep rer res ret reu rkb rkc rke rkk rkp rks rkt rku rpa rpb rpc rpe rpk rpp rpr rps rpt rpu rra rrb rrc rrk rrp rrr rrs rrt rru rsa rsb rsc rse rsk rsp rsr rss rst rsu rta rtb rtc rte rtk rtp rtr rts rtt rtu rua rub ruc rue ruk rup rur rus rut ruu saa sab sac sae sak sap sar sas sat sau sba sbb sbc sbe sbk sbp sbr sbs sbt sbu sca scb scc sce sck scp scr scs sct scu se- sea seb sec see sek sep ser ses set seu sk- ska skb skc ske skk skp skr sks skt sku spa spb spc spe spk spp spr sps spt spu sr- sra srb src sre srk srp srr srs srt ss- ssa ssb ssc sse ssk ssp ssr sss sst ssu sta stb stc ste stk stp str sts stt stu sua sub suc sue suk sup sur sus sut suu taa tab tac tae tak tap tar tas tat tau tba tbb tbc tbe tbk tbp tbr tbs tbt tbu tca tcb tcc tce tck tcp tcr tcs tct tcu te- tea teb tec tee tek tep ter tes tet teu tka tkb tkc tke tkk tkp tkr tks tkt tpa tpb tpc tpe tpk tpp tpr tps tpt tpu tra trb trc tre trk trp trr trs trt tru tsa tsb tsc tse tsk tsp tsr tss tst tsu tta ttb ttc tte ttk ttp ttr tts ttt ttu tua tub tuc tue tuk tup tur tus tut tuu ua- uaa uab uac uae uak uap uar uas uat uau uba ubb ubc ube ubk ubp ubr ubs ubt ubu uca ucb ucc uce uck ucp ucr ucs uct ucu uea ueb uec uee uep uer ues uet uka ukb ukc uke ukk ukp ukr uku up- upa upb upc upe upk upp upr ups upt upu ur- ura urb urc ure urk urp urr urs urt uru usa usb usc use usk usp usr uss ust usu uta utb utc ute utk utp utr uts utt utu uua uuc uue uur uus uut uuu