-er -up b-p b-u bbb bbe bbm bbn bbo bbp bbr bbs bbu be- beb bee bem ben beo bep ber bes beu bmb bme bmm bmn bmo bmp bmr bms bmu bnb bne bnn bno bnp bnr bns bnu bob boe bom bon boo bop bor bos bou bpb bpe bpm bpn bpo bpp bpr bps bpu brb bre brm brn bro brp brr brs bru bsb bse bsm bsn bso bsp bsr bss bsu bub bue bum bun buo bup bur bus buu ebb ebe ebm ebn ebo ebp ebr ebs ebu eeb eee eem een eeo eep eer ees em- emb eme emm emn emo emp emr ems emu en- enb ene enm enn eno enp enr ens enu eo- eob eoe eom eon eoo eop eor eos eou ep- epb epe epm epn epo epp epr eps epu erb ere erm ern ero erp err ers eru es- esb ese esm esn eso esp esr ess esu eu- eub eue eun eup eur eus m-o m-r mbb mbe mbm mbo mbp mbr mbs mbu meb mee mem men meo mep mer mes meu mmb mme mmm mmn mmo mmp mmr mms mmu mnb mne mnm mnn mno mnp mnr mns mnu mob moe mom mon moo mop mor mos mou mpb mpe mpm mpn mpo mpp mpr mps mpu mrb mre mrm mrn mro mrp mrr mrs mru msb mse msm msn mso msp msr mss msu mub mue mum mun mup mur mus muu nbb nbe nbm nbn nbo nbp nbr nbs nbu ne- neb nee nem nen neo nep ner nes neu nmb nme nmm nmn nmo nmp nmr nms nmu nnb nne nnm nnn nno nnp nns nnu no- nob noe nom non noo nop nor nos nou npb npe npm npn npo npp npr nps npu nrb nre nrm nrn nro nrp nrr nrs nru nsb nse nsm nsn nso nsp nsr nss nsu nub nue num nun nuo nup nur nus nuu ob- obb obe obm obn obo obp obr obs obu oeb oee oem oen oeo oep oer oes om- omb ome omm omn omo omp omr oms omu on- onb one onn ono onp onr ons onu oo- oob oom oon ooo oop oor oos op- opb ope opm opn opo opp opr ops or- orb ore orm orn oro orp orr ors oru os- osb ose osm osn oso osp osr oss osu ou- oue oum oun ouo oup our ous p-p pbb pbe pbm pbn pbo pbp pbr pbs pbu peb pee pem pen peo pep per pes peu pmb pme pmm pmn pmo pmp pmr pms pmu pn- pnb pne pnm pnn pno pnp pnr pns pnu pob poe pom pon poo pop por pos pou ppb ppe ppm ppn ppo ppp ppr pps ppu prb pre prm prn pro prp prr prs pru ps- psb pse psm psn pso psp psr pss psu pub pue pum pun pup pur pus puu rbb rbe rbm rbn rbo rbp rbr rbs rbu re- reb ree rem ren reo rep rer res reu rmb rme rmm rmn rmo rmp rmr rms rnb rnm rnn rno rnp rnr rns rnu rob roe rom ron roo rop ror ros rou rpb rpe rpm rpn rpo rpp rpr rps rpu rrb rrm rrn rrp rrr rrs rru rsb rse rsm rsn rso rsp rsr rss rsu rub rue rum run ruo rup rur rus ruu sbb sbe sbm sbn sbo sbp sbr sbs sbu se- seb see sem sen seo sep ser ses seu smb sme smm smn smo smp smr sms smu snb sne snm snn sno snp snr sns snu sob soe som son soo sop sor sos sou spb spe spm spn spo spp spr sps spu sr- srb sre srm srn sro srp srr srs ss- ssb sse ssm ssn sso ssp ssr sss ssu sub sue sum sun suo sup sur sus suu ubb ube ubn ubo ubp ubr ubs ubu ueb uee uem uen uep uer ues um- umb ume umm umn umo ump umr ums umu un- unb une unm unn uno unp unr uns unu uob uoe uom uon uoo uop uor uos up- upb upe upm upn upo upp upr ups upu ur- urb ure urm urn uro urp urr urs uru usb use usm usn uso usp usr uss usu uue uum uun uur uus uuu