-er -up a-a a-b a-c a-t aaa aab aac aad aae aap aar aat aau ab- aba abb abc abd abe abp abr abt abu ac- aca acb acc acd ace acp acr act acu ad- ada adb adc add ade adp adr adt adu aea aeb aec aed aee aep aer aet aeu ap- apa apb apc apd ape app apr apt apu ar- ara arb arc ard are arp arr art aru at- ata atb atc atd ate atp atr att atu au- aua aub auc aud aue aup aur aut b-p b-u baa bab bac bad bae bap bar bat bau bba bbb bbc bbd bbe bbp bbr bbt bbu bca bcb bcc bcd bce bcp bcr bct bcu bda bdb bdc bdd bde bdp bdr bdt bdu be- bea beb bec bed bee bep ber bet beu bpa bpb bpc bpd bpe bpp bpr bpt bpu bra brb brd bre brp brr brt bru bta btb btc btd bte btp btr btt btu bua bub buc bud bue bup bur but buu c-- caa cab cac cad cae cap car cat cau cba cbb cbc cbd cbe cbp cbr cbt cbu cca ccb ccc ccd cce ccp ccr cct ccu cda cdb cdc cdd cde cdp cdr cdt cdu ce- cea ceb cec ced cee cep cer cet ceu cpa cpb cpc cpd cpe cpp cpr cpt cpu cra crb crc crd cre crp crr crt cru cta ctb ctc ctd cte ctp ctr ctt ctu cua cub cuc cud cue cup cur cut cuu daa dab dac dad dae dap dar dat dau dba dbb dbc dbd dbe dbp dbr dbt dbu dca dcb dcc dcd dce dcp dcr dct dcu dda ddb ddc ddd dde ddp ddr ddt ddu de- dea deb dec ded dee dep der det deu dpa dpb dpc dpd dpe dpp dpr dpt dpu dra drb drc drd dre drp drr drt dru dta dtb dtc dtd dte dtp dtr dtt dtu dua dub duc dud due dup dur dut eaa eab eac ead eae eap ear eat eau eba ebb ebc ebd ebe ebp ebr ebt ebu ec- eca ecb ecc ecd ece ecr ect ecu ed- eda edb edc edd ede edp edr edt edu eea eeb eec eed eee eep eer eet ep- epa epb epc epd epe epp epr ept epu era erb erc erd ere erp err ert eru eta etb etc etd ete etp etr ett etu eu- eua eub euc eud eue eup eur eut p-p paa pab pac pad pae pap par pat pau pba pbb pbc pbd pbe pbp pbr pbt pbu pca pcb pcc pcd pce pcp pcr pct pcu pda pdb pdc pdd pde pdp pdr pdt pdu pea peb pec ped pee pep per pet peu ppa ppb ppc ppd ppe ppp ppr ppt ppu pra prb prc prd pre prp prr prt pru pt- pta ptb ptc ptd pte ptp ptr ptt ptu pua pub puc pud pue pup pur put puu ra- raa rab rac rad rae rap rar rat rau rba rbb rbc rbd rbe rbp rbr rbt rbu rca rcb rcc rcd rce rcp rcr rct rcu rda rdb rdc rdd rde rdp rdr rdt rdu re- rea reb rec red ree rep rer ret reu rpa rpb rpc rpd rpe rpp rpr rpt rpu rra rrb rrc rrd rrp rrr rrt rru rta rtb rtc rtd rte rtp rtr rtt rtu rua rub ruc rud rue rup rur rut ruu taa tab tac tad tae tap tar tat tau tba tbb tbc tbd tbe tbp tbr tbt tbu tca tcb tcc tcd tce tcp tcr tct tcu tda tdb tdc tdd tde tdp tdr tdt tdu te- tea teb tec ted tee tep ter tet teu tpa tpb tpc tpd tpe tpp tpr tpt tpu tra trb trc trd tre trp trr trt tru tta ttb ttc ttd tte ttp ttr ttt ttu tua tub tuc tud tue tup tur tut tuu ua- uaa uab uac uad uae uap uar uat uau uba ubb ubc ube ubp ubr ubt ubu uca ucb ucc ucd uce ucp ucr uct ucu uda udb udc udd ude udp udr udt udu uea ueb uec ued uee uep uer uet up- upa upb upc upd upe upp upr upt upu ur- ura urb urc urd ure urp urr urt uru uta utb utc utd ute utp utr utt utu uua uuc uue uur uut uuu

a-be aaaa aaab aaac aaad aaae aaap aaar aaba aabb aabc aabd aabp aabt aaca aacb aacc aacd aace aacp aacr aact aacu aada aadc aade aadt aadu aaea aaec aaep aapa aapc aapt aara aarc aard aare aarp aart aaru aata aatc aatt aaup abaa abab abac abad abae abap abar abat abau abb- abba abbb abbe abbr abbt abca abcb abcc abcd abcp abcr abct abda abdu abec abed abee aber abet abpa abpc abpd abpp abpr abra abrc abta abtu abua abud abue abut ac-t acaa acab acac acad acae acap acar acat acba acca accc accd acce accp acct accu acda acdb acdc acde acdp acdt ace- acea acec aced acer acet acpa acpd acpe acpr acpt acpu acr- acra acrc acre acrr acta actc acte actt actu acu- acue acup acur acut adaa adab adac adad adae adap adar adat adba adbc adcc adda addc addd adde addr addu adea adeb adee ader adet adp- adra adre adta adua adub adue adur aeac aeap aecb aect aede aedt aeer aer- aera aerc aerd aeta aetc aetr aett apac apap apar apat apba apbr apca apcb apcc apcd apcr apda apdd apdu apea apec aped apep aper apet apeu appa appc appd appr appt appu apra aprc apre aprt apta aptc apte aptt apua apuc apud apup arab arac arad arae arap arar arat arau arba arbe arc- arca arce arct arda ardc arde ardu area arec ared aree arep aret areu arpa arpe arpu arr- arra arrc