-er b-p bbb bbd bbe bbf bbi bbn bbo bbp bbr bbs bdb bdd bde bdf bdi bdo bdp bdr bds be- beb bed bee bef bei ben beo bep ber bes bfb bfd bfe bff bfi bfn bfo bfp bfr bfs bi- bib bid bie bif bii bin bio bip bir bis bnb bnd bne bnf bni bnn bno bnp bnr bns bob bod boe bof boi bon boo bop bor bos bpb bpd bpe bpf bpi bpn bpo bpp bpr bps brb brd bre brf bri brn bro brp brr brs bsb bsd bse bsf bsi bsn bso bsp bsr bss dbb dbd dbe dbf dbi dbn dbo dbp dbr dbs ddb ddd dde ddf ddi ddn ddo ddp ddr dds de- deb ded dee def dei den deo dep der des dfb dfd dfe dff dfi dfn dfo dfp dfr dfs di- dib did die dif dii din dio dip dir dis dnb dnd dne dnf dni dnn dno dnp dnr dns dob dod doe dof doi don doo dop dor dos dpb dpd dpe dpf dpi dpn dpo dpp dpr dps drb drd dre dri drn dro drp drr drs dsb dsd dse dsf dsi dsn dso dsp dsr dss ebb ebd ebe ebf ebi ebn ebo ebp ebr ebs ed- edb edd ede edf edi edn edo edp edr eds eeb eed eee eef een eeo eep eer ees ef- efb efd efe eff efi efo efp efr efs eib eid eie eif eii ein eio eip eir eis en- enb end ene enf eni enn eno enp enr ens eo- eob eod eoe eof eoi eon eoo eop eor eos ep- epb epd epe epf epi epn epo epp epr eps erb erd ere erf eri ern ero erp err ers es- esb esd ese esf esi esn eso esp esr ess fbb fbd fbe fbf fbi fbn fbo fbp fbr fbs fdb fdd fde fdf fdi fdn fdo fdp fdr fds feb fed fee fef fei fen feo fep fer fes ffd ffe fff ffi ffn ffo ffp ffr ffs fib fid fie fif fii fin fip fir fis fnb fnd fne fnf fni fnn fnp fnr fns fob foe fof foi fon foo fop for fos fpb fpd fpe fpi fpn fpo fpp fpr fps frb frd fre frf fri frn fro frp frr frs fsb fsd fse fsf fsi fsn fso fsp fsr fss i-d i-f ibb ibd ibe ibf ibi ibn ibo ibp ibr ibs idb idd ide idf idi idn ido idp idr ids ie- ied iee ief iei ien iep ier ies ifb ifd ife iff ifi ifn ifo ifp ifr ifs iib iid iie iif iii iin iio iip iir iis in- inb ind ine inf ini inn ino inp inr ins io- iob iod ioe iof ioi ion ioo iop ior ios ipb ipd ipe ipf ipi ipn ipo ipp ipr ips ir- irb ird ire irf iri irn iro irp irr irs is- isb isd ise isf isi isn iso isp isr iss n-i nbb nbd nbe nbf nbi nbn nbo nbp nbr nbs ndb ndd nde ndf ndi ndn ndo ndp ndr nds ne- neb ned nee nef nei nen neo nep ner nes nfb nfd nfe nff nfi nfn nfo nfp nfr nfs nib nid nie nif nii nin nio nip nir nis nnb nne nnf nni nnn nno nnp nns no- nob nod noe nof noi non noo nop nor nos npb npd npe npf npi npn npo npp npr nps nrb nrd nre nrf nri nrn nro nrp nrr nrs nsb nsd nse nsf nsi nsn nso nsp nsr nss o-i ob- obb obd obe obf obi obn obo obp obr obs odb odd ode odf odi odn odo odp odr ods oeb oed oee oef oei oen oeo oep oer oes of- ofb ofd ofe off ofi ofn ofo ofp ofr ofs oib oid oie oif oii oin oio oip oir ois on- onb ond one onf oni onn ono onp onr ons oo- oob ood oof ooi oon ooo oop oor oos op- opb opd ope opf opi opn opo opp opr ops or- orb ord ore orf ori orn oro orp orr ors os- osb osd ose osf osi osn oso osp osr oss p-p pbb pbd pbe pbf pbi pbn pbo pbp pbr pbs pdb pdd pde pdf pdi pdn pdo pdp pdr pds peb ped pee pef pei pen peo pep per pes pfb pfd pfe pff pfi pfn pfo pfp pfr pfs pib pid pie pif pii pin pio pip pir pis pn- pnb pnd pne pnf pni pnn pno pnp pnr pns pob pod poe pof poi pon poo pop por pos ppb ppd ppe ppf ppi ppn ppo ppp ppr pps prb prd pre prf pri prn pro prp prr prs ps- psb psd pse psf psi psn pso psp psr pss rbb rbd rbe rbf rbi rbn rbo rbp rbr rbs rdb rdd rde rdf rdi rdn rdo rdp rdr rds re- reb red ree ref rei ren reo rep rer res rfb rfd rfe rff rfi rfn rfo rfp rfr rfs rib rid rie rif rii rin rio rip rir ris rnb rnd rni rnn rno rnp rnr rns rob rod roe rof roi ron roo rop ror ros rpb rpd rpe rpf rpi rpn rpo rpp rpr rps rrb rrd rrf rri rrn rrp rrr rrs rsb rsd rse rsf rsi rsn rso rsp rsr rss sbb sbd sbe sbf sbi sbn sbo sbp sbr sbs sdb sdd sde sdf sdi sdn sdo sdp sdr sds se- seb sed see sef sei sen seo sep ser ses sfb sfd sfe sff sfi sfn sfo sfp sfr sfs sib sid sie sif sii sin sio sip sir sis snb snd sne snf sni snn sno snp snr sns sob sod soe sof soi son soo sop sor sos spb spd spe spf spi spn spo spp spr sps sr- srb srd