b-p bbb bbd bbe bbi bbn bbo bbp bbs bdb bdd bde bdi bdo bdp bds be- beb bed bee bei ben beo bep bes bi- bib bid bie bii bin bio bip bis bnb bnd bne bni bnn bno bnp bns bob bod boe boi bon boo bop bos bpb bpd bpe bpi bpn bpo bpp bps bsb bsd bse bsi bsn bso bsp bss dbb dbd dbe dbi dbn dbo dbp dbs ddb ddd dde ddi ddn ddo ddp dds de- deb ded dee dei den deo dep des di- dib did die dii din dio dip dis dnb dnd dne dni dnn dno dnp dns dob dod doe doi don doo dop dos dpb dpd dpe dpi dpn dpo dpp dps dsb dsd dse dsi dsn dso dsp dss ebb ebd ebe ebi ebn ebo ebp ebs ed- edb edd ede edi edn edo edp eds eeb eed eee een eeo eep ees eib eid eie eii ein eio eip eis en- enb end ene eni enn eno enp ens eo- eob eod eoe eoi eon eoo eop eos ep- epb epd epe epi epn epo epp eps es- esb esd ese esi esn eso esp ess i-d ibb ibd ibe ibi ibn ibo ibp ibs idb idd ide idi idn ido idp ids ie- ied iee iei ien iep ies iib iid iie iii iin iio iip iis in- inb ind ine ini 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 isn iso isp iss n-i nbb nbd nbe nbi nbn nbo nbp nbs ndb ndd nde ndi ndn ndo ndp nds ne- neb ned nee nei nen neo nep nes nib nid nie nii nin nio nip nis nnb nne nni nnn nno nnp nns no- nob nod noe noi non noo nop nos npb npd npe npi npn npo npp nps nsb nsd nse nsi nsn nso nsp nss o-i ob- obb obd obe obi obn obo obp obs odb odd ode odi odn odo odp ods oeb oed oee oei oen oeo oep oes oib oid oie oii oin oio oip ois on- onb ond one oni onn ono onp ons oo- oob ood ooi oon ooo oop oos op- opb opd ope opi opn opo opp ops os- osb osd ose osi osn oso osp oss p-p pbb pbd pbe pbi pbn pbo pbp pbs pdb pdd pde pdi pdn pdo pdp pds peb ped pee pei pen peo pep pes pib pid pie pii pin pio pip pis pn- pnb pnd pne pni pnn pno pnp pns pob pod poe poi pon poo pop pos ppb ppd ppe ppi ppn ppo ppp pps ps- psb psd pse psi psn pso psp pss sbb sbd sbe sbi sbn sbo sbp sbs sdb sdd sde sdi sdn sdo sdp sds se- seb sed see sei sen seo sep ses sib sid sie sii sin sio sip sis snb snd sne sni snn sno snp sns sob sod soe soi son soo sop sos spb spd spe spi spn spo spp sps ss- ssb ssd sse ssi ssn sso ssp sss