-er -up a-a a-b a-c a-t aaa aab aac aae aaf aao aap aar aas aat aau ab- aba abb abc abe abf abo abp abr abs abt abu ac- aca acb acc ace acf aco acp acr acs act acu aea aeb aec aee aef aeo aep aer aes aet aeu af- afa afb afc afe aff afo afp afr afs aft afu aoa aob aoc aoe aof aoo aop aor aos aot aou ap- apa apb apc ape apf apo app apr aps apt apu ar- ara arb arc are arf aro arp arr ars art aru as- asa asb asc ase asf aso asp asr ass ast asu at- ata atb atc ate atf ato atp atr ats att atu au- aua aub auc aue auf auo aup aur aus aut b-p b-u baa bab bac bae baf bao bap bar bas bat bau bba bbb bbc bbe bbf bbo bbp bbr bbs bbt bbu bca bcb bcc bce bcf bco bcp bcr bcs bct bcu be- bea beb bec bee bef beo bep ber bes bet beu bfa bfb bfc bfe bff bfo bfp bfr bfs bft bfu boa bob boc boe bof boo bop bor bos bot bou bpa bpb bpc bpe bpf bpo bpp bpr bps bpt bpu bra brb bre brf bro brp brr brs brt bru bsa bsb bsc bse bsf bso bsp bsr bss bst bsu bta btb btc bte btf bto btp btr bts btt btu bua bub buc bue buf buo bup bur bus but buu c-- caa cab cac cae caf cao cap car cas cat cau cba cbb cbc cbe cbf cbo cbp cbr cbs cbt cbu cca ccb ccc cce ccf cco ccp ccr ccs cct ccu ce- cea ceb cec cee cef ceo cep cer ces cet ceu cfa cfb cfc cfe cff cfo cfp cfr cfs cft cfu co- coa cob coc coe cof coo cop cor cos cot cou cpa cpb cpc cpe cpf cpo cpp cpr cps cpt cpu cra crb crc cre crf cro crp crr crs crt cru csa csb csc cse csf cso csp csr css cst csu cta ctb ctc cte ctf cto ctp ctr cts ctt ctu cua cub cuc cue cuf cuo cup cur cus cut cuu eaa eab eac eae eaf eao eap ear eas eat eau eba ebb ebc ebe ebf ebo ebp ebr ebs ebt ebu ec- eca ecb ecc ece ecf eco ecr ecs ect ecu eea eeb eec eee eef eeo eep eer ees eet ef- efa efb efc efe eff efo efp efr efs eft eo- eoa eob eoc eoe eof eoo eop eor eos eot eou ep- epa epb epc epe epf epo epp epr eps ept epu era erb erc ere erf ero erp err ers ert eru es- esa esb esc ese esf eso esp esr ess est esu eta etb etc ete etf eto etp etr ets ett etu eu- eua eub euc eue euf eup eur eus eut faa fab fac fae faf fao fap far fas fat fau fba fbb fbc fbe fbf fbo fbp fbr fbs fbt fbu fca fcb fcc fce fcf fco fcp fcr fcs fct fcu fea feb fec fee fef feo fep fer fes fet feu ffa ffc ffe fff ffo ffp ffr ffs fft ffu foa fob foc foe fof foo fop for fos fot fou fpa fpb fpc fpe fpo fpp fpr fps fpt fpu fra frb frc fre frf fro frp frr frs frt fru fsa fsb fsc fse fsf fso fsp fsr fss fst fsu fta ftb ftc fte ftf fto ftp ftr fts ftt ftu fua fub fue fuf fuo fup fur fus fut fuu oaa oab oac oae oaf oao oap oar oas oat oau ob- oba obb obc obe obf obo obp obr obs obt obu oc- oca ocb occ ocf oco ocp ocr ocs oct ocu oea oeb oec oee oef oeo oep oer oes oet of- ofa ofb ofc ofe off ofo ofp ofr ofs oft ofu oo- ooa oob ooc oof ooo oop oor oos oot op- opa opb opc ope opf opo opp opr ops opt or- ora orb orc ore orf oro orp orr ors ort oru os- osa osb osc ose osf oso osp osr oss ost osu ot- ota otb otc ote otf oto otp otr ots ott otu ou- oua ouc oue ouf ouo oup our ous out p-p paa pab pac pae paf pao pap par pas pat pau pba pbb pbc pbe pbf pbo pbp pbr pbs pbt pbu pca pcb pcc pce pcf pco pcp pcr pcs pct pcu pea peb pec pee pef peo pep per pes pet peu pfa pfb pfc pfe pff pfo pfp pfr pfs pft pfu poa pob poc poe pof poo pop por pos pot pou ppa ppb ppc ppe ppf ppo ppp ppr pps ppt ppu pra prb prc pre prf pro prp prr prs prt pru ps- psa psb psc pse psf pso psp psr pss pst psu pt- pta ptb ptc pte ptf pto ptp ptr pts ptt ptu pua pub puc pue puf pup pur pus put puu ra- raa rab rac rae raf rao rap rar ras rat rau rba rbb rbc rbe rbf rbo rbp rbr rbs rbt rbu rca rcb rcc rce rcf rco rcp rcr rcs rct rcu re- rea reb rec ree ref reo rep rer res ret reu rfa rfb rfc rfe rff rfo rfp rfr rfs rft rfu roa rob roc roe rof roo rop ror ros rot rou rpa rpb rpc rpe rpf rpo rpp rpr rps rpt rpu rra rrb rrc rrf rrp rrr rrs rrt rru rsa rsb rsc rse rsf rso rsp rsr rss rst rsu rta rtb rtc rte rtf rto rtp rtr rts rtt rtu rua rub ruc rue ruf ruo rup rur rus rut ruu saa sab sac sae saf sao sap sar sas sat sau sba