-er -up a-a a-b a-c a-t aaa aab aac aae aan aap aar aas aat aau ab- aba abb abc abe abn abp abr abs abt abu ac- aca acb acc ace acn acp acr acs act acu aea aeb aec aee aen aep aer aes aet aeu an- ana anb anc ane ann anp anr ans ant anu ap- apa apb apc ape apn app apr aps apt apu ar- ara arb arc are arn arp arr ars art aru as- asa asb asc ase asn asp asr ass ast asu at- ata atb atc ate atn atp atr ats att atu au- aua aub auc aue aun aup aur aus aut b-p b-u baa bab bac bae ban bap bar bas bat bau bba bbb bbc bbe bbn bbp bbr bbs bbt bbu bca bcb bcc bce bcn bcp bcr bcs bct bcu be- bea beb bec bee ben bep ber bes bet beu bna bnb bnc bne bnn bnp bnr bns bnt bnu bpa bpb bpc bpe bpn bpp bpr bps bpt bpu bra brb bre brn brp brr brs brt bru bsa bsb bsc bse bsn bsp bsr bss bst bsu bta btb btc bte btn btp btr bts btt btu bua bub buc bue bun bup bur bus but buu c-- caa cab cac cae can cap car cas cat cau cba cbb cbc cbe cbn cbp cbr cbs cbt cbu cca ccb ccc cce ccn ccp ccr ccs cct ccu ce- cea ceb cec cee cen cep cer ces cet ceu cn- cna cnb cnc cne cnn cnp cnr cns cnt cnu cpa cpb cpc cpe cpn cpp cpr cps cpt cpu cra crb crc cre crn crp crr crs crt cru csa csb csc cse csn csp csr css cst csu cta ctb ctc cte ctn ctp ctr cts ctt ctu cua cub cuc cue cun cup cur cus cut cuu eaa eab eac eae ean eap ear eas eat eau eba ebb ebc ebe ebn ebp ebr ebs ebt ebu ec- eca ecb ecc ece ecn ecr ecs ect ecu eea eeb eec eee een eep eer ees eet en- ena enb enc ene enn enp enr ens ent enu ep- epa epb epc epe epn epp epr eps ept epu era erb erc ere ern erp err ers ert eru es- esa esb esc ese esn esp esr ess est esu eta etb etc ete etn etp etr ets ett etu eu- eua eub euc eue eun eup eur eus eut naa nab nac nae nan nap nar nas nat nau nba nbb nbc nbe nbn nbp nbr nbs nbt nbu nca ncb ncc nce ncn ncp ncr ncs nct ncu ne- nea neb nec nee nen nep ner nes net neu nna nnb nnc nne nnn nnp nns nnt nnu npa npb npc npe npn npp npr nps npt npu nra nrb nrc nre nrn nrp nrr nrs nrt nru nsa nsb nsc nse nsn nsp nsr nss nst nsu nta ntb ntc nte ntn ntp ntr nts ntt ntu nua nub nuc nue nun nup nur nus nut nuu p-p paa pab pac pae pan pap par pas pat pau pba pbb pbc pbe pbn pbp pbr pbs pbt pbu pca pcb pcc pce pcn pcp pcr pcs pct pcu pea peb pec pee pen pep per pes pet peu pn- pna pnb pnc pne pnn pnp pnr pns pnt pnu ppa ppb ppc ppe ppn ppp ppr pps ppt ppu pra prb prc pre prn prp prr prs prt pru ps- psa psb psc pse psn psp psr pss pst psu pt- pta ptb ptc pte ptn ptp ptr pts ptt ptu pua pub puc pue pun pup pur pus put puu ra- raa rab rac rae ran rap rar ras rat rau rba rbb rbc rbe rbn rbp rbr rbs rbt rbu rca rcb rcc rce rcn rcp rcr rcs rct rcu re- rea reb rec ree ren rep rer res ret reu rna rnb rnc rnn rnp rnr rns rnt rnu rpa rpb rpc rpe rpn rpp rpr rps rpt rpu rra rrb rrc rrn rrp rrr rrs rrt rru rsa rsb rsc rse rsn rsp rsr rss rst rsu rta rtb rtc rte rtn rtp rtr rts rtt rtu rua rub ruc rue run rup rur rus rut ruu saa sab sac sae san sap sar sas sat sau sba sbb sbc sbe sbn sbp sbr sbs sbt sbu sca scb scc sce scn scp scr scs sct scu se- sea seb sec see sen sep ser ses set seu sna snb snc sne snn snp snr sns snt snu spa spb spc spe spn spp spr sps spt spu sr- sra srb src sre srn srp srr srs srt ss- ssa ssb ssc sse ssn ssp ssr sss sst ssu sta stb stc ste stn stp str sts stt stu sua sub suc sue sun sup sur sus sut suu taa tab tac tae tan tap tar tas tat tau tba tbb tbc tbe tbn tbp tbr tbs tbt tbu tca tcb tcc tce tcn tcp tcr tcs tct tcu te- tea teb tec tee ten tep ter tes tet teu tna tnb tnc tne tnn tnp tnr tns tnt tpa tpb tpc tpe tpn tpp tpr tps tpt tpu tra trb trc tre trn trp trr trs trt tru tsa tsb tsc tse tsn tsp tsr tss tst tsu tta ttb ttc tte ttn ttp ttr tts ttt ttu tua tub tuc tue tun tup tur tus tut tuu ua- uaa uab uac uae uan uap uar uas uat uau uba ubb ubc ube ubn ubp ubr ubs ubt ubu uca ucb ucc uce ucn ucp ucr ucs uct ucu uea ueb uec uee uen uep uer ues uet un- una unb unc une unn unp unr uns unt unu up- upa upb upc upe upn upp upr ups upt upu ur- ura urb urc ure urn urp urr urs urt uru usa