-er -up b-p b-u bbb bbe bbi bbk bbm bbn bbp bbr bbu be- beb bee bei bek bem ben bep ber beu bi- bib bie bii bik bim bin bip bir biu bkb bke bkk bkm bkn bkp bkr bmb bme bmi bmk bmm bmn bmp bmr bmu bnb bne bni bnk bnn bnp bnr bnu bpb bpe bpi bpm bpn bpp bpr bpu brb bre bri brk brm brn brp brr bru bub bue bui buk bum bun bup bur buu ebb ebe ebi ebk ebm ebn ebp ebr ebu eeb eee eek eem een eep eer eib eie eii eik eim ein eip eir eiu ekb eke eki ekp ekr eku em- emb eme emi emk emm emn emp emr emu en- enb ene eni enk enm enn enp enr enu ep- epb epe epi epm epn epp epr epu erb ere eri erk erm ern erp err eru eu- eub eue eui eun eup eur ibb ibe ibi ibk ibm ibn ibp ibr ibu ie- iee iei iek iem ien iep ier iib iie iii iim iin iip iir iiu ikb ike iki ikk ikr iku im- imb ime imi imm imn imp imu in- inb ine ini ink inm inn inp inr inu ipb ipe ipi ipm ipn ipp ipr ipu ir- irb ire iri irk irm irn irp irr iru iu- iub iue iui ium iup iur kbb kbe kbi kbk kbm kbn kbp kbr kbu ke- keb kee kei kek kem ken kep ker kib kie kii kik kim kin kip kir kiu kkb kke kki kkk kkm kkn kkp kkr kku kmb kme kmi kmk kmm kmp kmu kn- kne kni knk knm knn knp knr knu kpe kpi kpk kpm kpn kpp kpr kpu kri krk krn krp krr kru kub kue kui kuk kum kun kup kur kuu m-r mbb mbe mbi mbk mbm mbp mbr mbu meb mee mei mek mem men mep mer meu mi- mib mie mii mik mim min mip mir miu mkb mke mkk mkm mkn mkp mkr mku mmb mme mmi mmk mmm mmn mmp mmr mmu mnb mne mni mnk mnm mnn mnp mnr mnu mpb mpe mpi mpk mpm mpn mpp mpr mpu mrb mre mri mrk mrm mrn mrp mrr mru mub mue mui muk mum mun mup mur muu n-i nbb nbe nbi nbk nbm nbn nbp nbr nbu ne- neb nee nei nek nem nen nep ner neu nib nie nii nik nim nin nip nir niu nke nki nkk nkm nkn nkp nkr nku nmb nme nmi nmk nmm nmn nmp nmr nmu nnb nne nni nnk nnm nnn nnp nnu npb npe npi npm npn npp npr npu nrb nre nri nrk nrm nrn nrp nrr nru nub nue nui nuk num nun nup nur nuu p-p pbb pbe pbi pbk pbm pbn pbp pbr pbu peb pee pei pek pem pen pep per peu pib pie pii pik pim pin pip pir piu pkb pke pki pkm pkn pkp pkr pku pmb pme pmi pmk pmm pmn pmp pmr pmu pn- pnb pne pni pnk pnm pnn pnp pnr pnu ppb ppe ppi ppk ppm ppn ppp ppr ppu prb pre pri prk prm prn prp prr pru pub pue pui puk pum pun pup pur puu rbb rbe rbi rbk rbm rbn rbp rbr rbu re- reb ree rei rek rem ren rep rer reu rib rie rii rik rim rin rip rir rkb rke rkk rkm rkp rku rmb rme rmi rmm rmn rmp rmr rnb rni rnm rnn rnp rnr rnu rpb rpe rpi rpk rpm rpn rpp rpr rpu rrb rri rrk rrm rrn rrp rrr rru rub rue rui ruk rum run rup rur ruu ubb ube ubi ubk ubn ubp ubr ubu ueb uee uei uem uen uep uer uib uie uii uim uin uip uir uiu ukb uke uki ukk ukn ukp ukr uku um- umb ume umi umm umn ump umr umu un- unb une uni unk unm unn unp unr unu up- upb upe upi upk upm upn upp upr upu ur- urb ure uri urk urm urn urp urr uru uue uum uun uur uuu