-er b-p bbb bbe bbi bbm bbn bbo bbp bbr be- beb bee bei bem ben beo bep ber bi- bib bie bii bim bin bio bip bir bmb bme bmi bmm bmn bmo bmp bmr bnb bne bni bnn bno bnp bnr bob boe boi bom bon boo bop bor bpb bpe bpi bpm bpn bpo bpp bpr brb bre bri brm brn bro brp brr ebb ebe ebi ebm ebn ebo ebp ebr eeb eee eem een eeo eep eer eib eie eii eim ein eio eip eir em- emb eme emi emm emn emo emp emr en- enb ene eni enm enn eno enp enr eo- eob eoe eoi eom eon eoo eop eor ep- epb epe epi epm epn epo epp epr erb ere eri erm ern ero erp err ibb ibe ibi ibm ibn ibo ibp ibr ie- iee iei iem ien iep ier iib iie iii iim iin iio iip iir im- imb ime imi imm imn imo imp in- inb ine ini inm inn ino inp inr io- iob ioe ioi iom ion ioo iop ior ipb ipe ipi ipm ipn ipo ipp ipr ir- irb ire iri irm irn iro irp irr m-o m-r mbb mbe mbi mbm mbo mbp mbr meb mee mei mem men meo mep mer mi- mib mie mii mim min mio mip mir mmb mme mmi mmm mmn mmo mmp mmr mnb mne mni mnm mnn mno mnp mnr mob moe moi mom mon moo mop mor mpb mpe mpi mpm mpn mpo mpp mpr mrb mre mri mrm mrn mro mrp mrr n-i nbb nbe nbi nbm nbn nbo nbp nbr ne- neb nee nei nem nen neo nep ner nib nie nii nim nin nio nip nir nmb nme nmi nmm nmn nmo nmp nmr nnb nne nni nnm nnn nno nnp no- nob noe noi nom non noo nop nor npb npe npi npm npn npo npp npr nrb nre nri nrm nrn nro nrp nrr o-i ob- obb obe obi obm obn obo obp obr oeb oee oei oem oen oeo oep oer oib oie oii oim oin oio oip oir om- omb ome omi omm omn omo omp omr on- onb one oni onn ono onp onr oo- oob ooi oom oon ooo oop oor op- opb ope opi opm opn opo opp opr or- orb ore ori orm orn oro orp orr p-p pbb pbe pbi pbm pbn pbo pbp pbr peb pee pei pem pen peo pep per pib pie pii pim pin pio pip pir pmb pme pmi pmm pmn pmo pmp pmr pn- pnb pne pni pnm pnn pno pnp pnr pob poe poi pom pon poo pop por ppb ppe ppi ppm ppn ppo ppp ppr prb pre pri prm prn pro prp prr rbb rbe rbi rbm rbn rbo rbp rbr re- reb ree rei rem ren reo rep rer rib rie rii rim rin rio rip rir rmb rme rmi rmm rmn rmo rmp rmr rnb rni rnm rnn rno rnp rnr rob roe roi rom ron roo rop ror rpb rpe rpi rpm rpn rpo rpp rpr rrb rri rrm rrn rrp rrr