-er b-p bbb bbe bbf bbg bbi bbk bbn bbo bbp bbr bbs bbt be- beb bee bef beg bei bek ben beo bep ber bes bet bfb bfe bff bfg bfi bfn bfo bfp bfr bfs bft bgb bge bgf bgg bgi bgk bgn bgo bgp bgr bgs bgt bi- bib bie bif big bii bik bin bio bip bir bis bit bkb bke bkf bkg bkk bkn bko bkp bkr bks bkt bnb bne bnf bng bni bnk bnn bno bnp bnr bns bnt bob boe bof bog boi bok bon boo bop bor bos bot bpb bpe bpf bpg bpi bpn bpo bpp bpr bps bpt brb bre brf brg bri brk brn bro brp brr brs brt bsb bse bsf bsg bsi bsk bsn bso bsp bsr bss bst btb bte btf btg bti btk btn bto btp btr bts btt ebb ebe ebf ebg ebi ebk ebn ebo ebp ebr ebs ebt eeb eee eef eeg eek een eeo eep eer ees eet ef- efb efe eff efg efi efo efp efr efs eft egb ege egf egg egi egn ego egp egr egs egt eib eie eif eig eii eik ein eio eip eir eis eit ekb eke ekf ekg eki eko ekp ekr eks ekt en- enb ene enf eng eni enk enn eno enp enr ens ent eo- eob eoe eof eog eoi eok eon eoo eop eor eos eot ep- epb epe epf epg epi epn epo epp epr eps ept erb ere erf erg eri erk ern ero erp err ers ert es- esb ese esf esg esi esk esn eso esp esr ess est etb ete etf etg eti etk etn eto etp etr ets ett fbb fbe fbf fbg fbi fbk fbn fbo fbp fbr fbs fbt feb fee fef feg fei fek fen feo fep fer fes fet ffe fff ffg ffi ffk ffn ffo ffp ffr ffs fft fgb fge fgf fgg fgi fgn fgp fgr fgs fgt fib fie fif fig fii fik fin fip fir fis fit fkb fkf fkg fki fkk fkp fkt fnb fne fnf fng fni fnk fnn fnp fnr fns fnt fob foe fof fog foi fok fon foo fop for fos fot fpb fpe fpg fpi fpk fpn fpo fpp fpr fps fpt frb fre frf frg fri frk frn fro frp frr frs frt fsb fse fsf fsg fsi fsk fsn fso fsp fsr fss fst ftb fte ftf ftg fti ftk ftn fto ftp ftr fts ftt g-p gbe gbf gbg gbi gbk gbn gbo gbp gbr gbs gbt ge- geb gee gef geg gei gek gen geo gep ger ges get gfb gfe gff gfi gfk gfo gfp gfr gfs gft ggb ggg ggi ggn ggo ggp ggr ggs ggt gib gie gif gig gii gik gin gio gip gir gis git gkb gkn gko gkp gks gkt gnb gne gnf gni gnn gno gnp gnr gns gnt gob goe gof gog goi gok gon goo gop gor gos got gpb gpe gpf gpg gpi gpk gpn gpo gpp gpr gps gpt grb gre grf grg gri grk grn gro grp grr grs grt gsb gse gsf gsg gsi gsk gsn gso gsp gsr gss gst gtb gte gtf gtg gti gtk gtn gto gtp gtr gts gtt i-f ibb ibe ibf ibg ibi ibk ibn ibo ibp ibr ibs ibt ie- iee ief ieg iei iek ien iep ier ies iet ifb ife iff ifg ifi ifn ifo ifp ifr ifs ift igb ige igf igg igi igk ign igo igp igr igs igt iib iie iif iii iin iio iip iir iis iit ikb ike ikf iki ikk iko ikr iks ikt in- inb ine inf ing ini ink inn ino inp inr ins int io- iob ioe iof iog ioi ion ioo iop ior ios iot ipb ipe ipf ipg ipi ipn ipo ipp ipr ips ipt ir- irb ire irf irg iri irk irn iro irp irr irs irt is- isb ise isf isg isi isk isn iso isp isr iss ist itb ite itf itg iti itk itn ito itp its itt k-t kbb kbe kbf kbi kbk kbn kbo kbp kbr kbs ke- keb kee kef keg kei kek ken keo kep ker kes ket kff kfg kfi kfo kfs kgb kgf kgi kgo kgp kgs kib kie kif kig kii kik kin kio kip kir kis kit kkb kke kki kkk kkn kkp kkr kks kkt kn- kne knf kng kni knk knn kno knp knr knt kob koe kof kog koi kok kon koo kop kor kos kot kpe kpf kpi kpk kpn kpo kpp kpr kps kpt krf krg kri krk krn kro krp krr krs krt ksb kse ksf ksg ksi ksk ksn kso ksp ksr kss kst ktb kte ktf ktg ktk ktn kto ktp ktr kts ktt n-i nbb nbe nbf nbg nbi nbk nbn nbo nbp nbr nbs nbt ne- neb nee nef neg nei nek nen neo nep ner nes net nfb nfe nff nfi nfk nfn nfo nfp nfr nfs nft ngb nge ngf ngg ngi ngk ngn ngo ngp ngs ngt nib nie nif nig nii nik nin nio nip nir nis nit nke nkf nki nkk nkn nko nkp nkr nks nkt nnb nne nnf nng nni nnk nnn nno nnp nns nnt no- nob noe nof nog noi nok non noo nop nor nos not npb npe npf npg npi npn npo npp npr nps npt nrb nre nrf nrg nri nrk nrn nro nrp nrr nrs nrt nsb nse nsf nsg nsi nsk nsn nso nsp nsr nss nst ntb nte ntf ntg nti ntk ntn nto ntp ntr nts ntt o-i ob- obb obe obf obg obi obk obn obo obp obr obs obt oeb oee oef oeg oei oen oeo oep oer oes oet of- ofb ofe off ofg ofi ofn ofo ofp ofr ofs oft oge ogf ogg ogi ogn ogo ogp ogs ogt