-er -up a-a a-b a-c a-t aaa aab aac aad aae aao aap aar aat aau ab- aba abb abc abd abe abo abp abr abt abu ac- aca acb acc acd ace aco acp acr act acu ad- ada adb adc add ade ado adp adr adt adu aea aeb aec aed aee aeo aep aer aet aeu aoa aob aoc aod aoe aoo aop aor aot aou ap- apa apb apc apd ape apo app apr apt apu ar- ara arb arc ard are aro arp arr art aru at- ata atb atc atd ate ato atp atr att atu au- aua aub auc aud aue auo aup aur aut b-p b-u baa bab bac bad bae bao bap bar bat bau bba bbb bbc bbd bbe bbo bbp bbr bbt bbu bca bcb bcc bcd bce bco bcp bcr bct bcu bda bdb bdc bdd bde bdo bdp bdr bdt bdu be- bea beb bec bed bee beo bep ber bet beu boa bob boc bod boe boo bop bor bot bou bpa bpb bpc bpd bpe bpo bpp bpr bpt bpu bra brb brd bre bro brp brr brt bru bta btb btc btd bte bto btp btr btt btu bua bub buc bud bue buo bup bur but buu c-- caa cab cac cad cae cao cap car cat cau cba cbb cbc cbd cbe cbo cbp cbr cbt cbu cca ccb ccc ccd cce cco ccp ccr cct ccu cda cdb cdc cdd cde cdo cdp cdr cdt cdu ce- cea ceb cec ced cee ceo cep cer cet ceu co- coa cob coc cod coe coo cop cor cot cou cpa cpb cpc cpd cpe cpo cpp cpr cpt cpu cra crb crc crd cre cro crp crr crt cru cta ctb ctc ctd cte cto ctp ctr ctt ctu cua cub cuc cud cue cuo cup cur cut cuu daa dab dac dad dae dao dap dar dat dau dba dbb dbc dbd dbe dbo dbp dbr dbt dbu dca dcb dcc dcd dce dco dcp dcr dct dcu dda ddb ddc ddd dde ddo ddp ddr ddt ddu de- dea deb dec ded dee deo dep der det deu doa dob doc dod doe doo dop dor dot dou dpa dpb dpc dpd dpe dpo dpp dpr dpt dpu dra drb drc drd dre dro drp drr drt dru dta dtb dtc dtd dte dto dtp dtr dtt dtu dua dub duc dud due duo dup dur dut eaa eab eac ead eae eao eap ear eat eau eba ebb ebc ebd ebe ebo ebp ebr ebt ebu ec- eca ecb ecc ecd ece eco ecr ect ecu ed- eda edb edc edd ede edo edp edr edt edu eea eeb eec eed eee eeo eep eer eet eo- eoa eob eoc eod eoe eoo eop eor eot eou ep- epa epb epc epd epe epo epp epr ept epu era erb erc erd ere ero erp err ert eru eta etb etc etd ete eto etp etr ett etu eu- eua eub euc eud eue eup eur eut oaa oab oac oad oae oao oap oar oat oau ob- oba obb obc obd obe obo obp obr obt obu oc- oca ocb occ ocd oco ocp ocr oct ocu oda odb odc odd ode odo odp odr odt odu oea oeb oec oed oee oeo oep oer oet oo- ooa oob ooc ood ooo oop oor oot op- opa opb opc opd ope opo opp opr opt or- ora orb orc ord ore oro orp orr ort oru ot- ota otb otc otd ote oto otp otr ott otu ou- oua ouc oud oue ouo oup our out p-p paa pab pac pad pae pao pap par pat pau pba pbb pbc pbd pbe pbo pbp pbr pbt pbu pca pcb pcc pcd pce pco pcp pcr pct pcu pda pdb pdc pdd pde pdo pdp pdr pdt pdu pea peb pec ped pee peo pep per pet peu poa pob poc pod poe poo pop por pot pou ppa ppb ppc ppd ppe ppo ppp ppr ppt ppu pra prb prc prd pre pro prp prr prt pru pt- pta ptb ptc ptd pte pto ptp ptr ptt ptu pua pub puc pud pue pup pur put puu ra- raa rab rac rad rae rao rap rar rat rau rba rbb rbc rbd rbe rbo rbp rbr rbt rbu rca rcb rcc rcd rce rco rcp rcr rct rcu rda rdb rdc rdd rde rdo rdp rdr rdt rdu re- rea reb rec red ree reo rep rer ret reu roa rob roc rod roe roo rop ror rot rou rpa rpb rpc rpd rpe rpo rpp rpr rpt rpu rra rrb rrc rrd rrp rrr rrt rru rta rtb rtc rtd rte rto rtp rtr rtt rtu rua rub ruc rud rue ruo rup rur rut ruu taa tab tac tad tae tao tap tar tat tau tba tbb tbc tbd tbe tbo tbp tbr tbt tbu tca tcb tcc tcd tce tco tcp tcr tct tcu tda tdb tdc tdd tde tdo tdp tdr tdt tdu te- tea teb tec ted tee teo tep ter tet teu to- toa tob toc tod toe too top tor tot tou tpa tpb tpc tpd tpe tpo tpp tpr tpt tpu tra trb trc trd tre tro trp trr trt tru tta ttb ttc ttd tte tto ttp ttr ttt ttu tua tub tuc tud tue tuo tup tur tut tuu ua- uaa uab uac uad uae uao uap uar uat uau uba ubb ubc ube ubo ubp ubr ubt ubu uca ucb ucc ucd uce uco ucp ucr uct ucu uda udb udc udd ude udo udp udr udt udu uea ueb uec ued uee uep uer uet uoa uob uoc uod uoe uoo uop uor uot up- upa upb upc upd upe upo upp upr upt upu ur- ura urb urc urd ure uro urp urr urt uru