-er -up a-a a-b a-t aaa aab aad aae aap aar aas aat aau ab- aba abb abd abe abp abr abs abt abu ad- ada adb add ade adp adr ads adt adu aea aeb aed aee aep aer aes aet aeu ap- apa apb apd ape app apr aps apt apu ar- ara arb ard are arp arr ars art aru as- asa asb asd ase asp asr ass ast asu at- ata atb atd ate atp atr ats att atu au- aua aub aud aue aup aur aus aut b-p b-u baa bab bad bae bap bar bas bat bau bba bbb bbd bbe bbp bbr bbs bbt bbu bda bdb bdd bde bdp bdr bds bdt bdu be- bea beb bed bee bep ber bes bet beu bpa bpb bpd bpe bpp bpr bps bpt bpu bra brb brd bre brp brr brs brt bru bsa bsb bsd bse bsp bsr bss bst bsu bta btb btd bte btp btr bts btt btu bua bub bud bue bup bur bus but buu daa dab dad dae dap dar das dat dau dba dbb dbd dbe dbp dbr dbs dbt dbu dda ddb ddd dde ddp ddr dds ddt ddu de- dea deb ded dee dep der des det deu dpa dpb dpd dpe dpp dpr dps dpt dpu dra drb drd dre drp drr drs drt dru dsa dsb dsd dse dsp dsr dss dst dsu dta dtb dtd dte dtp dtr dts dtt dtu dua dub dud due dup dur dus dut eaa eab ead eae eap ear eas eat eau eba ebb ebd ebe ebp ebr ebs ebt ebu ed- eda edb edd ede edp edr eds edt edu eea eeb eed eee eep eer ees eet ep- epa epb epd epe epp epr eps ept epu era erb erd ere erp err ers ert eru es- esa esb esd ese esp esr ess est esu eta etb etd ete etp etr ets ett etu eu- eua eub eud eue eup eur eus eut p-p paa pab pad pae pap par pas pat pau pba pbb pbd pbe pbp pbr pbs pbt pbu pda pdb pdd pde pdp pdr pds pdt pdu pea peb ped pee pep per pes pet peu ppa ppb ppd ppe ppp ppr pps ppt ppu pra prb prd pre prp prr prs prt pru ps- psa psb psd pse psp psr pss pst psu pt- pta ptb ptd pte ptp ptr pts ptt ptu pua pub pud pue pup pur pus put puu ra- raa rab rad rae rap rar ras rat rau rba rbb rbd rbe rbp rbr rbs rbt rbu rda rdb rdd rde rdp rdr rds rdt rdu re- rea reb red ree rep rer res ret reu rpa rpb rpd rpe rpp rpr rps rpt rpu rra rrb rrd rrp rrr rrs rrt rru rsa rsb rsd rse rsp rsr rss rst rsu rta rtb rtd rte rtp rtr rts rtt rtu rua rub rud rue rup rur rus rut ruu saa sab sad sae sap sar sas sat sau sba sbb sbd sbe sbp sbr sbs sbt sbu sda sdb sdd sde sdp sdr sds sdt sdu se- sea seb sed see sep ser ses set seu spa spb spd spe spp spr sps spt spu sr- sra srb srd sre srp srr srs srt ss- ssa ssb ssd sse ssp ssr sss sst ssu sta stb std ste stp str sts stt stu sua sub sud sue sup sur sus sut suu taa tab tad tae tap tar tas tat tau tba tbb tbd tbe tbp tbr tbs tbt tbu tda tdb tdd tde tdp tdr tds tdt tdu te- tea teb ted tee tep ter tes tet teu tpa tpb tpd tpe tpp tpr tps tpt tpu tra trb trd tre trp trr trs trt tru tsa tsb tsd tse tsp tsr tss tst tsu tta ttb ttd tte ttp ttr tts ttt ttu tua tub tud tue tup tur tus tut tuu ua- uaa uab uad uae uap uar uas uat uau uba ubb ube ubp ubr ubs ubt ubu uda udb udd ude udp udr uds udt udu uea ueb ued uee uep uer ues uet up- upa upb upd upe upp upr ups upt upu ur- ura urb urd ure urp urr urs urt uru usa usb usd use usp usr uss ust usu uta utb utd ute utp utr uts utt utu uua uue uur uus uut uuu