-er -up b-p b-u bbb bbd bbe bbm bbo bbp bbr bbs bbu bdb bdd bde bdm bdo bdp bdr bds bdu be- beb bed bee bem beo bep ber bes beu bmb bmd bme bmm bmo bmp bmr bms bmu bob bod boe bom boo bop bor bos bou bpb bpd bpe bpm bpo bpp bpr bps bpu brb brd bre brm bro brp brr brs bru bsb bsd bse bsm bso bsp bsr bss bsu bub bud bue bum buo bup bur bus buu dbb dbd dbe dbm dbo dbp dbr dbs dbu ddb ddd dde ddm ddo ddp ddr dds ddu de- deb ded dee dem deo dep der des deu dmb dmd dme dmm dmo dmp dmr dms dmu dob dod doe dom doo dop dor dos dou dpb dpd dpe dpm dpo dpp dpr dps dpu drb drd dre drm dro drp drr drs dru dsb dsd dse dsm dso dsp dsr dss dsu dub dud due dum duo dup dur dus ebb ebd ebe ebm ebo ebp ebr ebs ebu ed- edb edd ede edm edo edp edr eds edu eeb eed eee eem eeo eep eer ees em- emb emd eme emm emo emp emr ems emu eo- eob eod eoe eom eoo eop eor eos eou ep- epb epd epe epm epo epp epr eps epu erb erd ere erm ero erp err ers eru es- esb esd ese esm eso esp esr ess esu eu- eub eud eue eup eur eus m-o m-r mbb mbd mbe mbm mbo mbp mbr mbs mbu mdb mdd mde mdm mdo mdp mdr mds mdu meb med mee mem meo mep mer mes meu mmb mmd mme mmm mmo mmp mmr mms mmu mob mod moe mom moo mop mor mos mou mpb mpd mpe mpm mpo mpp mpr mps mpu mrb mrd mre mrm mro mrp mrr mrs mru msb msd mse msm mso msp msr mss msu mub mud mue mum mup mur mus muu ob- obb obd obe obm obo obp obr obs obu odb odd ode odm odo odp odr ods odu oeb oed oee oem oeo oep oer oes om- omb omd ome omm omo omp omr oms omu oo- oob ood oom ooo oop oor oos op- opb opd ope opm opo opp opr ops or- orb ord ore orm oro orp orr ors oru os- osb osd ose osm oso osp osr oss osu ou- oud oue oum ouo oup our ous p-p pbb pbd pbe pbm pbo pbp pbr pbs pbu pdb pdd pde pdm pdo pdp pdr pds pdu peb ped pee pem peo pep per pes peu pmb pmd pme pmm pmo pmp pmr pms pmu pob pod poe pom poo pop por pos pou ppb ppd ppe ppm ppo ppp ppr pps ppu prb prd pre prm pro prp prr prs pru ps- psb psd pse psm pso psp psr pss psu pub pud pue pum pup pur pus puu rbb rbd rbe rbm rbo rbp rbr rbs rbu rdb rdd rde rdm rdo rdp rdr rds rdu re- reb red ree rem reo rep rer res reu rmb rmd rme rmm rmo rmp rmr rms rob rod roe rom roo rop ror ros rou rpb rpd rpe rpm rpo rpp rpr rps rpu rrb rrd rrm rrp rrr rrs rru rsb rsd rse rsm rso rsp rsr rss rsu rub rud rue rum ruo rup rur rus ruu sbb sbd sbe sbm sbo sbp sbr sbs sbu sdb sdd sde sdm sdo sdp sdr sds sdu se- seb sed see sem seo sep ser ses seu smb smd sme smm smo smp smr sms smu sob sod soe som soo sop sor sos sou spb spd spe spm spo spp spr sps spu sr- srb srd sre srm sro srp srr srs ss- ssb ssd sse ssm sso ssp ssr sss ssu sub sud sue sum suo sup sur sus suu ubb ube ubo ubp ubr ubs ubu udb udd ude udm udo udp udr uds udu ueb ued uee uem uep uer ues um- umb umd ume umm umo ump umr ums umu uob uod uoe uom uoo uop uor uos up- upb upd upe upm upo upp upr ups upu ur- urb urd ure urm uro urp urr urs uru usb usd use usm uso usp usr uss usu uue uum uur uus uuu