b-p bbb bbe bbf bbi bbk bbn bbo bbp bbs bbt be- beb bee bef bei bek ben beo bep bes bet bfb bfe bff bfi bfn bfo bfp bfs bft bi- bib bie bif bii bik bin bio bip bis bit bkb bke bkf bkk bkn bko bkp bks bkt bnb bne bnf bni bnk bnn bno bnp bns bnt bob boe bof boi bok bon boo bop bos bot bpb bpe bpf bpi bpn bpo bpp bps bpt bsb bse bsf bsi bsk bsn bso bsp bss bst btb bte btf bti btk btn bto btp bts btt ebb ebe ebf ebi ebk ebn ebo ebp ebs ebt eeb eee eef eek een eeo eep ees eet ef- efb efe eff efi efo efp efs eft eib eie eif eii eik ein eio eip eis eit ekb eke ekf eki eko ekp eks ekt en- enb ene enf eni enk enn eno enp ens ent eo- eob eoe eof eoi eok eon eoo eop eos eot ep- epb epe epf epi epn epo epp eps ept es- esb ese esf esi esk esn eso esp ess est etb ete etf eti etk etn eto etp ets ett fbb fbe fbf fbi fbk fbn fbo fbp fbs fbt feb fee fef fei fek fen feo fep fes fet ffe fff ffi ffk ffn ffo ffp ffs fft fib fie fif fii fik fin fip fis fit fkb fkf fki fkk fkp fkt fnb fne fnf fni fnk fnn fnp fns fnt fob foe fof foi fok fon foo fop fos fot fpb fpe fpi fpk fpn fpo fpp fps fpt fsb fse fsf fsi fsk fsn fso fsp fss fst ftb fte ftf fti ftk ftn fto ftp fts ftt i-f ibb ibe ibf ibi ibk ibn ibo ibp ibs ibt ie- iee ief iei iek ien iep ies iet ifb ife iff ifi ifn ifo ifp ifs ift iib iie iif iii iin iio iip iis iit ikb ike ikf iki ikk iko iks ikt in- inb ine inf ini ink inn ino inp ins int io- iob ioe iof ioi ion ioo iop ios iot ipb ipe ipf ipi ipn ipo ipp ips ipt is- isb ise isf isi isk isn iso isp iss ist itb ite itf iti itk itn ito itp its itt k-t kbb kbe kbf kbi kbk kbn kbo kbp kbs ke- keb kee kef kei kek ken keo kep kes ket kff kfi kfo kfs kib kie kif kii kik kin kio kip kis kit kkb kke kki kkk kkn kkp kks kkt kn- kne knf kni knk knn kno knp knt kob koe kof koi kok kon koo kop kos kot kpe kpf kpi kpk kpn kpo kpp kps kpt ksb kse ksf ksi ksk ksn kso ksp kss kst ktb kte ktf ktk ktn kto ktp kts ktt n-i nbb nbe nbf nbi nbk nbn nbo nbp nbs nbt ne- neb nee nef nei nek nen neo nep nes net nfb nfe nff nfi nfk nfn nfo nfp nfs nft nib nie nif nii nik nin nio nip nis nit nke nkf nki nkk nkn nko nkp nks nkt nnb nne nnf nni nnk nnn nno nnp nns nnt no- nob noe nof noi nok non noo nop nos not npb npe npf npi npn npo npp nps npt nsb nse nsf nsi nsk nsn nso nsp nss nst ntb nte ntf nti ntk ntn nto ntp nts ntt o-i ob- obb obe obf obi obk obn obo obp obs obt oeb oee oef oei oen oeo oep oes oet of- ofb ofe off ofi ofn ofo ofp ofs oft oib oie oif oii oik oin oio oip ois oit okb oke oki okk oko okp oks on- onb one onf oni onk onn ono onp ons ont oo- oob oof ooi ook oon ooo oop oos oot op- opb ope opf opi opk opn opo opp ops opt os- osb ose osf osi osk osn oso osp oss ost ot- otb ote otf oti otk otn oto otp ots ott p-p pbb pbe pbf pbi pbk pbn pbo pbp pbs pbt peb pee pef pei pek pen peo pep pes pet pfb pfe pff pfi pfk pfn pfo pfp pfs pft pib pie pif pii pik pin pio pip pis pit pkb pke pkf pki pkn pko pkp pks pkt pn- pnb pne pnf pni pnk pnn pno pnp pns pnt pob poe pof poi pok pon poo pop pos pot ppb ppe ppf ppi ppk ppn ppo ppp pps ppt ps- psb pse psf psi psk psn pso psp pss pst pt- ptb pte ptf pti ptk ptn pto ptp pts ptt sbb sbe sbf sbi sbk sbn sbo sbp sbs sbt se- seb see sef sei sek sen seo sep ses set sfb sfe sff sfi sfk sfn sfo sfp sfs sft sib sie sif sii sik sin sio sip sis sit sk- skb ske skf ski skk sko skp sks skt snb sne snf sni snk snn sno snp sns snt sob soe sof soi sok son soo sop sos sot spb spe spf spi spk spn spo spp sps spt ss- ssb sse ssf ssi ssk ssn sso ssp sss sst stb ste stf sti stk stn sto stp sts stt tbb tbe tbf tbi tbk tbn tbo tbp tbs tbt te- teb tee tef tei tek ten teo tep tes tet tfb tfe tff tfi tfk tfn tfo tfp tfs tft tib tie tif tii tik tin tio tip tis tit tkb tke tkk tko tkp tks tkt tnb tne tnf tni tnk tnn tno tnp tns tnt to- tob toe tof toi tok ton too top tos tot tpb tpe tpf tpi tpk tpn tpo tpp tps tpt tsb tse tsf tsi tsk tsn tso tsp tss tst ttb tte ttf tti ttk ttn tto ttp tts ttt