b-p bbb bbd bbe bbi bbk bbn bbo bbp bbs bdb bdd bde bdi bdk bdo bdp bds be- beb bed bee bei bek ben beo bep bes bi- bib bid bie bii bik bin bio bip bis bkb bke bkk bkn bko bkp bks bnb bnd bne bni bnk bnn bno bnp bns bob bod boe boi bok bon boo bop bos bpb bpd bpe bpi bpn bpo bpp bps bsb bsd bse bsi bsk bsn bso bsp bss dbb dbd dbe dbi dbk dbn dbo dbp dbs ddb ddd dde ddi ddk ddn ddo ddp dds de- deb ded dee dei dek den deo dep des di- dib did die dii dik din dio dip dis dkb dke dki dkk dko dkp dks dnb dnd dne dni dnk dnn dno dnp dns dob dod doe doi dok don doo dop dos dpb dpd dpe dpi dpk dpn dpo dpp dps dsb dsd dse dsi dsk dsn dso dsp dss ebb ebd ebe ebi ebk ebn ebo ebp ebs ed- edb edd ede edi edk edn edo edp eds eeb eed eee eek een eeo eep ees eib eid eie eii eik ein eio eip eis ekb ekd eke eki eko ekp eks en- enb end ene eni enk enn eno enp ens eo- eob eod eoe eoi eok eon eoo eop eos ep- epb epd epe epi epn epo epp eps es- esb esd ese esi esk esn eso esp ess i-d ibb ibd ibe ibi ibk ibn ibo ibp ibs idb idd ide idi idk idn ido idp ids ie- ied iee iei iek ien iep ies iib iid iie iii iin iio iip iis ikb ike iki ikk iko iks in- inb ind ine ini ink inn ino inp ins io- iob iod ioe ioi ion ioo iop ios ipb ipd ipe ipi ipn ipo ipp ips is- isb isd ise isi isk isn iso isp iss kbb kbd kbe kbi kbk kbn kbo kbp kbs kdb kde kdk kdo kdp kds ke- keb ked kee kei kek ken keo kep kes kib kid kie kii kik kin kio kip kis kkb kke kki kkk kkn kkp kks kn- knd kne kni knk knn kno knp kob kod koe koi kok kon koo kop kos kpd kpe kpi kpk kpn kpo kpp kps ksb ksd kse ksi ksk ksn kso ksp kss n-i nbb nbd nbe nbi nbk nbn nbo nbp nbs ndb ndd nde ndi ndk ndn ndo ndp nds ne- neb ned nee nei nek nen neo nep nes nib nid nie nii nik nin nio nip nis nke nki nkk nkn nko nkp nks nnb nne nni nnk nnn nno nnp nns no- nob nod noe noi nok non noo nop nos npb npd npe npi npn npo npp nps nsb nsd nse nsi nsk nsn nso nsp nss o-i ob- obb obd obe obi obk obn obo obp obs odb odd ode odi odn odo odp ods oeb oed oee oei oen oeo oep oes oib oid oie oii oik oin oio oip ois okb okd oke oki okk oko okp oks on- onb ond one oni onk onn ono onp ons oo- oob ood ooi ook oon ooo oop oos op- opb opd ope opi opk opn opo opp ops os- osb osd ose osi osk osn oso osp oss p-p pbb pbd pbe pbi pbk pbn pbo pbp pbs pdb pdd pde pdi pdk pdn pdo pdp pds peb ped pee pei pek pen peo pep pes pib pid pie pii pik pin pio pip pis pkb pkd pke pki pkn pko pkp pks pn- pnb pnd pne pni pnk pnn pno pnp pns pob pod poe poi pok pon poo pop pos ppb ppd ppe ppi ppk ppn ppo ppp pps ps- psb psd pse psi psk psn pso psp pss sbb sbd sbe sbi sbk sbn sbo sbp sbs sdb sdd sde sdi sdk sdn sdo sdp sds se- seb sed see sei sek sen seo sep ses sib sid sie sii sik sin sio sip sis sk- skb skd ske ski skk sko skp sks snb snd sne sni snk snn sno snp sns sob sod soe soi sok son soo sop sos spb spd spe spi spk spn spo spp sps ss- ssb ssd sse ssi ssk ssn sso ssp sss