b-p bbb bbi bbk bbm bbn bbo bbp bbr bi- bib bii bik bim bin bio bip bir bkb bkk bkm bkn bko bkp bkr bmb bmi bmk bmm bmn bmo bmp bmr bnb bni bnk bnn bno bnp bnr bob boi bok bom bon boo bop bor bpb bpi bpm bpn bpo bpp bpr brb bri brk brm brn bro brp brr ibb ibi ibk ibm ibn ibo ibp ibr iib iii iim iin iio iip iir ikb iki ikk iko ikr im- imb imi imm imn imo imp in- inb ini ink inm inn ino inp inr io- iob ioi iom ion ioo iop ior ipb ipi ipm ipn ipo ipp ipr ir- irb iri irk irm irn iro irp irr kbb kbi kbk kbm kbn kbo kbp kbr kib kii kik kim kin kio kip kir kkb kki kkk kkm kkn kkp kkr kmb kmi kmk kmm kmo kmp kn- kni knk knm knn kno knp knr kob koi kok kom kon koo kop kor kpi kpk kpm kpn kpo kpp kpr kri krk krn kro krp krr m-o m-r mbb mbi mbk mbm mbo mbp mbr mi- mib mii mik mim min mio mip mir mkb mkk mkm mkn mko mkp mkr mmb mmi mmk mmm mmn mmo mmp mmr mnb mni mnk mnm mnn mno mnp mnr mob moi mok mom mon moo mop mor mpb mpi mpk mpm mpn mpo mpp mpr mrb mri mrk mrm mrn mro mrp mrr n-i nbb nbi nbk nbm nbn nbo nbp nbr nib nii nik nim nin nio nip nir nki nkk nkm nkn nko nkp nkr nmb nmi nmk nmm nmn nmo nmp nmr nnb nni nnk nnm nnn nno nnp no- nob noi nok nom non noo nop nor npb npi npm npn npo npp npr nrb nri nrk nrm nrn nro nrp nrr o-i ob- obb obi obk obm obn obo obp obr oib oii oik oim oin oio oip oir okb oki okk oko okp okr om- omb omi omm omn omo omp omr on- onb oni onk onn ono onp onr oo- oob ooi ook oom oon ooo oop oor op- opb opi opk opm opn opo opp opr or- orb ori ork orm orn oro orp orr p-p pbb pbi pbk pbm pbn pbo pbp pbr pib pii pik pim pin pio pip pir pkb pki pkm pkn pko pkp pkr pmb pmi pmk pmm pmn pmo pmp pmr pn- pnb pni pnk pnm pnn pno pnp pnr pob poi pok pom pon poo pop por ppb ppi ppk ppm ppn ppo ppp ppr prb pri prk prm prn pro prp prr rbb rbi rbk rbm rbn rbo rbp rbr rib rii rik rim rin rio rip rir rkb rkk rkm rko rkp rmb rmi rmm rmn rmo rmp rmr rnb rni rnm rnn rno rnp rnr rob roi rok rom ron roo rop ror rpb rpi rpk rpm rpn rpo rpp rpr rrb rri rrk rrm rrn rrp rrr