-er -up a-a a-b a-c a-t aaa aab aac aae aaf aao aap aar aat aau ab- aba abb abc abe abf abo abp abr abt abu ac- aca acb acc ace acf aco acp acr act acu aea aeb aec aee aef aeo aep aer aet aeu af- afa afb afc afe aff afo afp afr aft afu aoa aob aoc aoe aof aoo aop aor aot aou ap- apa apb apc ape apf apo app apr apt apu ar- ara arb arc are arf aro arp arr art aru at- ata atb atc ate atf ato atp atr att atu au- aua aub auc aue auf auo aup aur aut b-p b-u baa bab bac bae baf bao bap bar bat bau bba bbb bbc bbe bbf bbo bbp bbr bbt bbu bca bcb bcc bce bcf bco bcp bcr bct bcu be- bea beb bec bee bef beo bep ber bet beu bfa bfb bfc bfe bff bfo bfp bfr bft bfu boa bob boc boe bof boo bop bor bot bou bpa bpb bpc bpe bpf bpo bpp bpr bpt bpu bra brb bre brf bro brp brr brt bru bta btb btc bte btf bto btp btr btt btu bua bub buc bue buf buo bup bur but buu c-- caa cab cac cae caf cao cap car cat cau cba cbb cbc cbe cbf cbo cbp cbr cbt cbu cca ccb ccc cce ccf cco ccp ccr cct ccu ce- cea ceb cec cee cef ceo cep cer cet ceu cfa cfb cfc cfe cff cfo cfp cfr cft cfu co- coa cob coc coe cof coo cop cor cot cou cpa cpb cpc cpe cpf cpo cpp cpr cpt cpu cra crb crc cre crf cro crp crr crt cru cta ctb ctc cte ctf cto ctp ctr ctt ctu cua cub cuc cue cuf cuo cup cur cut cuu eaa eab eac eae eaf eao eap ear eat eau eba ebb ebc ebe ebf ebo ebp ebr ebt ebu ec- eca ecb ecc ece ecf eco ecr ect ecu eea eeb eec eee eef eeo eep eer eet ef- efa efb efc efe eff efo efp efr eft eo- eoa eob eoc eoe eof eoo eop eor eot eou ep- epa epb epc epe epf epo epp epr ept epu era erb erc ere erf ero erp err ert eru eta etb etc ete etf eto etp etr ett etu eu- eua eub euc eue euf eup eur eut faa fab fac fae faf fao fap far fat fau fba fbb fbc fbe fbf fbo fbp fbr fbt fbu fca fcb fcc fce fcf fco fcp fcr fct fcu fea feb fec fee fef feo fep fer fet feu ffa ffc ffe fff ffo ffp ffr fft ffu foa fob foc foe fof foo fop for fot fou fpa fpb fpc fpe fpo fpp fpr fpt fpu fra frb frc fre frf fro frp frr frt fru fta ftb ftc fte ftf fto ftp ftr ftt ftu fua fub fue fuf fuo fup fur fut fuu oaa oab oac oae oaf oao oap oar oat oau ob- oba obb obc obe obf obo obp obr obt obu oc- oca ocb occ ocf oco ocp ocr oct ocu oea oeb oec oee oef oeo oep oer oet of- ofa ofb ofc ofe off ofo ofp ofr oft ofu oo- ooa oob ooc oof ooo oop oor oot op- opa opb opc ope opf opo opp opr opt or- ora orb orc ore orf oro orp orr ort oru ot- ota otb otc ote otf oto otp otr ott otu ou- oua ouc oue ouf ouo oup our out p-p paa pab pac pae paf pao pap par pat pau pba pbb pbc pbe pbf pbo pbp pbr pbt pbu pca pcb pcc pce pcf pco pcp pcr pct pcu pea peb pec pee pef peo pep per pet peu pfa pfb pfc pfe pff pfo pfp pfr pft pfu poa pob poc poe pof poo pop por pot pou ppa ppb ppc ppe ppf ppo ppp ppr ppt ppu pra prb prc pre prf pro prp prr prt pru pt- pta ptb ptc pte ptf pto ptp ptr ptt ptu pua pub puc pue puf pup pur put puu ra- raa rab rac rae raf rao rap rar rat rau rba rbb rbc rbe rbf rbo rbp rbr rbt rbu rca rcb rcc rce rcf rco rcp rcr rct rcu re- rea reb rec ree ref reo rep rer ret reu rfa rfb rfc rfe rff rfo rfp rfr rft rfu roa rob roc roe rof roo rop ror rot rou rpa rpb rpc rpe rpf rpo rpp rpr rpt rpu rra rrb rrc rrf rrp rrr rrt rru rta rtb rtc rte rtf rto rtp rtr rtt rtu rua rub ruc rue ruf ruo rup rur rut ruu taa tab tac tae taf tao tap tar tat tau tba tbb tbc tbe tbf tbo tbp tbr tbt tbu tca tcb tcc tce tcf tco tcp tcr tct tcu te- tea teb tec tee tef teo tep ter tet teu tfa tfb tfc tfe tff tfo tfp tfr tft tfu to- toa tob toc toe tof too top tor tot tou tpa tpb tpc tpe tpf tpo tpp tpr tpt tpu tra trb trc tre trf tro trp trr trt tru tta ttb ttc tte ttf tto ttp ttr ttt ttu tua tub tuc tue tuf tuo tup tur tut tuu ua- uaa uab uac uae uaf uao uap uar uat uau uba ubb ubc ube ubf ubo ubp ubr ubt ubu uca ucb ucc uce ucf uco ucp ucr uct ucu uea ueb uec uee uef uep uer uet ufa ufc ufe uff ufo ufp ufr uft ufu uoa uob uoc uoe uoo uop uor uot up- upa upb upc upe upf upo upp upr upt upu ur- ura urb urc ure urf uro urp urr urt uru uta utb utc ute