-er -up a-a a-b a-t aaa aab aae aan aap aar aas aat aau ab- aba abb abe abn abp abr abs abt abu aea aeb aee aen aep aer aes aet aeu an- ana anb ane ann anp anr ans ant anu ap- apa apb ape apn app apr aps apt apu ar- ara arb are arn arp arr ars art aru as- asa asb ase asn asp asr ass ast asu at- ata atb ate atn atp atr ats att atu au- aua aub aue aun aup aur aus aut b-p b-u baa bab bae ban bap bar bas bat bau bba bbb bbe bbn bbp bbr bbs bbt bbu be- bea beb bee ben bep ber bes bet beu bna bnb bne bnn bnp bnr bns bnt bnu bpa bpb bpe bpn bpp bpr bps bpt bpu bra brb bre brn brp brr brs brt bru bsa bsb bse bsn bsp bsr bss bst bsu bta btb bte btn btp btr bts btt btu bua bub bue bun bup bur bus but buu eaa eab eae ean eap ear eas eat eau eba ebb ebe ebn ebp ebr ebs ebt ebu eea eeb eee een eep eer ees eet en- ena enb ene enn enp enr ens ent enu ep- epa epb epe epn epp epr eps ept epu era erb ere ern erp err ers ert eru es- esa esb ese esn esp esr ess est esu eta etb ete etn etp etr ets ett etu eu- eua eub eue eun eup eur eus eut naa nab nae nan nap nar nas nat nau nba nbb nbe nbn nbp nbr nbs nbt nbu ne- nea neb nee nen nep ner nes net neu nna nnb nne nnn nnp nns nnt nnu npa npb npe npn npp npr nps npt npu nra nrb nre nrn nrp nrr nrs nrt nru nsa nsb nse nsn nsp nsr nss nst nsu nta ntb nte ntn ntp ntr nts ntt ntu nua nub nue nun nup nur nus nut nuu p-p paa pab pae pan pap par pas pat pau pba pbb pbe pbn pbp pbr pbs pbt pbu pea peb pee pen pep per pes pet peu pn- pna pnb pne pnn pnp pnr pns pnt pnu ppa ppb ppe ppn ppp ppr pps ppt ppu pra prb pre prn prp prr prs prt pru ps- psa psb pse psn psp psr pss pst psu pt- pta ptb pte ptn ptp ptr pts ptt ptu pua pub pue pun pup pur pus put puu ra- raa rab rae ran rap rar ras rat rau rba rbb rbe rbn rbp rbr rbs rbt rbu re- rea reb ree ren rep rer res ret reu rna rnb rnn rnp rnr rns rnt rnu rpa rpb rpe rpn rpp rpr rps rpt rpu rra rrb rrn rrp rrr rrs rrt rru rsa rsb rse rsn rsp rsr rss rst rsu rta rtb rte rtn rtp rtr rts rtt rtu rua rub rue run rup rur rus rut ruu saa sab sae san sap sar sas sat sau sba sbb sbe sbn sbp sbr sbs sbt sbu se- sea seb see sen sep ser ses set seu sna snb sne snn snp snr sns snt snu spa spb spe spn spp spr sps spt spu sr- sra srb sre srn srp srr srs srt ss- ssa ssb sse ssn ssp ssr sss sst ssu sta stb ste stn stp str sts stt stu sua sub sue sun sup sur sus sut suu taa tab tae tan tap tar tas tat tau tba tbb tbe tbn tbp tbr tbs tbt tbu te- tea teb tee ten tep ter tes tet teu tna tnb tne tnn tnp tnr tns tnt tpa tpb tpe tpn tpp tpr tps tpt tpu tra trb tre trn trp trr trs trt tru tsa tsb tse tsn tsp tsr tss tst tsu tta ttb tte ttn ttp ttr tts ttt ttu tua tub tue tun tup tur tus tut tuu ua- uaa uab uae uan uap uar uas uat uau uba ubb ube ubn ubp ubr ubs ubt ubu uea ueb uee uen uep uer ues uet un- una unb une unn unp unr uns unt unu up- upa upb upe upn upp upr ups upt upu ur- ura urb ure urn urp urr urs urt uru usa usb use usn usp usr uss ust usu uta utb ute utn utp utr uts utt utu uua uue uun uur uus uut uuu