-er -up a-a a-b a-c aaa aab aac aad aae aan aap aar aas aau ab- aba abb abc abd abe abn abp abr abs abu ac- aca acb acc acd ace acn acp acr acs acu ad- ada adb adc add ade adn adp adr ads adu aea aeb aec aed aee aen aep aer aes aeu an- ana anb anc and ane ann anp anr ans anu ap- apa apb apc apd ape apn app apr aps apu ar- ara arb arc ard are arn arp arr ars aru as- asa asb asc asd ase asn asp asr ass asu au- aua aub auc aud aue aun aup aur aus b-p b-u baa bab bac bad bae ban bap bar bas bau bba bbb bbc bbd bbe bbn bbp bbr bbs bbu bca bcb bcc bcd bce bcn bcp bcr bcs bcu bda bdb bdc bdd bde bdp bdr bds bdu be- bea beb bec bed bee ben bep ber bes beu bna bnb bnc bnd bne bnn bnp bnr bns bnu bpa bpb bpc bpd bpe bpn bpp bpr bps bpu bra brb brd bre brn brp brr brs bru bsa bsb bsc bsd bse bsn bsp bsr bss bsu bua bub buc bud bue bun bup bur bus buu c-- caa cab cac cad cae can cap car cas cau cba cbb cbc cbd cbe cbn cbp cbr cbs cbu cca ccb ccc ccd cce ccn ccp ccr ccs ccu cda cdb cdc cdd cde cdn cdp cdr cds cdu ce- cea ceb cec ced cee cen cep cer ces ceu cn- cna cnb cnc cnd cne cnn cnp cnr cns cnu cpa cpb cpc cpd cpe cpn cpp cpr cps cpu cra crb crc crd cre crn crp crr crs cru csa csb csc csd cse csn csp csr css csu cua cub cuc cud cue cun cup cur cus cuu daa dab dac dad dae dan dap dar das dau dba dbb dbc dbd dbe dbn dbp dbr dbs dbu dca dcb dcc dcd dce dcn dcp dcr dcs dcu dda ddb ddc ddd dde ddn ddp ddr dds ddu de- dea deb dec ded dee den dep der des deu dna dnb dnc dnd dne dnn dnp dnr dns dpa dpb dpc dpd dpe dpn dpp dpr dps dpu dra drb drc drd dre drn drp drr drs dru dsa dsb dsc dsd dse dsn dsp dsr dss dsu dua dub duc dud due dun dup dur dus eaa eab eac ead eae ean eap ear eas eau eba ebb ebc ebd ebe ebn ebp ebr ebs ebu ec- eca ecb ecc ecd ece ecn ecr ecs ecu ed- eda edb edc edd ede edn edp edr eds edu eea eeb eec eed eee een eep eer ees en- ena enb enc end ene enn enp enr ens enu ep- epa epb epc epd epe epn epp epr eps epu era erb erc erd ere ern erp err ers eru es- esa esb esc esd ese esn esp esr ess esu eu- eua eub euc eud eue eun eup eur eus naa nab nac nad nae nan nap nar nas nau nba nbb nbc nbd nbe nbn nbp nbr nbs nbu nca ncb ncc ncd nce ncn ncp ncr ncs ncu nda ndb ndc ndd nde ndn ndp ndr nds ndu ne- nea neb nec ned nee nen nep ner nes neu nna nnb nnc nne nnn nnp nns nnu npa npb npc npd npe npn npp npr nps npu nra nrb nrc nrd nre nrn nrp nrr nrs nru nsa nsb nsc nsd nse nsn nsp nsr nss nsu nua nub nuc nud nue nun nup nur nus nuu p-p paa pab pac pad pae pan pap par pas pau pba pbb pbc pbd pbe pbn pbp pbr pbs pbu pca pcb pcc pcd pce pcn pcp pcr pcs pcu pda pdb pdc pdd pde pdn pdp pdr pds pdu pea peb pec ped pee pen pep per pes peu pn- pna pnb pnc pnd pne pnn pnp pnr pns pnu ppa ppb ppc ppd ppe ppn ppp ppr pps ppu pra prb prc prd pre prn prp prr prs pru ps- psa psb psc psd pse psn psp psr pss psu pua pub puc pud pue pun pup pur pus puu ra- raa rab rac rad rae ran rap rar ras rau rba rbb rbc rbd rbe rbn rbp rbr rbs rbu rca rcb rcc rcd rce rcn rcp rcr rcs rcu rda rdb rdc rdd rde rdn rdp rdr rds rdu re- rea reb rec red ree ren rep rer res reu rna rnb rnc rnd rnn rnp rnr rns rnu rpa rpb rpc rpd rpe rpn rpp rpr rps rpu rra rrb rrc rrd rrn rrp rrr rrs rru rsa rsb rsc rsd rse rsn rsp rsr rss rsu rua rub ruc rud rue run rup rur rus ruu saa sab sac sad sae san sap sar sas sau sba sbb sbc sbd sbe sbn sbp sbr sbs sbu sca scb scc scd sce scn scp scr scs scu sda sdb sdc sdd sde sdn sdp sdr sds sdu se- sea seb sec sed see sen sep ser ses seu sna snb snc snd sne snn snp snr sns snu spa spb spc spd spe spn spp spr sps spu sr- sra srb src srd sre srn srp srr srs ss- ssa ssb ssc ssd sse ssn ssp ssr sss ssu sua sub suc sud sue sun sup sur sus suu ua- uaa uab uac uad uae uan uap uar uas uau uba ubb ubc ube ubn ubp ubr ubs ubu uca ucb ucc ucd uce ucn ucp ucr ucs ucu uda udb udc udd ude udn udp udr uds udu uea ueb uec ued uee uen uep uer ues un- una unb unc und une unn unp unr uns unu up- upa upb upc upd upe upn upp upr ups upu ur- ura urb urc urd ure urn