b-u bbb bbd bbe bbf bbi bbk bbn bbo bbs bbt bbu bdb bdd bde bdf bdi bdk bdo bds bdt bdu be- beb bed bee bef bei bek ben beo bes bet beu bfb bfd bfe bff bfi bfn bfo bfs bft bfu bi- bib bid bie bif bii bik bin bio bis bit biu bkb bke bkf bkk bkn bko bks bkt bnb bnd bne bnf bni bnk bnn bno bns bnt bnu bob bod boe bof boi bok bon boo bos bot bou bsb bsd bse bsf bsi bsk bsn bso bss bst bsu btb btd bte btf bti btk btn bto bts btt btu bub bud bue buf bui buk bun buo bus but buu dbb dbd dbe dbf dbi dbk dbn dbo dbs dbt dbu ddb ddd dde ddf ddi ddk ddn ddo dds ddt ddu de- deb ded dee def dei dek den deo des det deu dfb dfd dfe dff dfi dfk dfn dfo dfs dft dfu di- dib did die dif dii dik din dio dis dit diu dkb dke dki dkk dko dks dkt dku dnb dnd dne dnf dni dnk dnn dno dns dnt dob dod doe dof doi dok don doo dos dot dou dsb dsd dse dsf dsi dsk dsn dso dss dst dsu dtb dtd dte dtf dti dtk dtn dto dts dtt dtu dub dud due duf dui duk dun duo dus dut ebb ebd ebe ebf ebi ebk ebn ebo ebs ebt ebu ed- edb edd ede edf edi edk edn edo eds edt edu eeb eed eee eef eek een eeo ees eet ef- efb efd efe eff efi efo efs eft eib eid eie eif eii eik ein eio eis eit eiu ekb ekd eke ekf eki eko eks ekt eku en- enb end ene enf eni enk enn eno ens ent enu eo- eob eod eoe eof eoi eok eon eoo eos eot eou es- esb esd ese esf esi esk esn eso ess est esu etb etd ete etf eti etk etn eto ets ett etu eu- eub eud eue euf eui eun eus eut fbb fbd fbe fbf fbi fbk fbn fbo fbs fbt fbu fdb fdd fde fdf fdi fdk fdn fdo fds fdt fdu feb fed fee fef fei fek fen feo fes fet feu ffd ffe fff ffi ffk ffn ffo ffs fft ffu fib fid fie fif fii fik fin fis fit fiu fkb fkf fki fkk fkt fnb fnd fne fnf fni fnk fnn fns fnt fnu fob foe fof foi fok fon foo fos fot fou fsb fsd fse fsf fsi fsk fsn fso fss fst fsu ftb ftd fte ftf fti ftk ftn fto fts ftt ftu fub fud fue fuf fui fuk fun fuo fus fut fuu i-d i-f ibb ibd ibe ibf ibi ibk ibn ibo ibs ibt ibu idb idd ide idf idi idk idn ido ids idt idu ie- ied iee ief iei iek ien ies iet ifb ifd ife iff ifi ifn ifo ifs ift ifu iib iid iie iif iii iin iio iis iit iiu ikb ike ikf iki ikk iko iks ikt iku in- inb ind ine inf ini ink inn ino ins int inu io- iob iod ioe iof ioi ion ioo ios iot iou is- isb isd ise isf isi isk isn iso iss ist isu itb itd ite itf iti itk itn ito its itt itu iu- iub iud iue iui ius iut k-t kbb kbd kbe kbf kbi kbk kbn kbo kbs kbu kdb kde kdf kdk kdo kds kdt kdu ke- keb ked kee kef kei kek ken keo kes ket kfd kff kfi kfo kfs kfu kib kid kie kif kii kik kin kio kis kit kiu kkb kke kki kkk kkn kks kkt kku kn- knd kne knf kni knk knn kno knt knu kob kod koe kof koi kok kon koo kos kot kou ksb ksd kse ksf ksi ksk ksn kso kss kst ksu ktb kte ktf ktk ktn kto kts ktt ktu kub kud kue kui kuk kun kus kut kuu n-i nbb nbd nbe nbf nbi nbk nbn nbo nbs nbt nbu ndb ndd nde ndf ndi ndk ndn ndo nds ndt ndu ne- neb ned nee nef nei nek nen neo nes net neu nfb nfd nfe nff nfi nfk nfn nfo nfs nft nfu nib nid nie nif nii nik nin nio nis nit niu nke nkf nki nkk nkn nko nks nkt nku nnb nne nnf nni nnk nnn nno nns nnt nnu no- nob nod noe nof noi nok non noo nos not nou nsb nsd nse nsf nsi nsk nsn nso nss nst nsu ntb ntd nte ntf nti ntk ntn nto nts ntt ntu nub nud nue nui nuk nun nuo nus nut nuu o-i ob- obb obd obe obf obi obk obn obo obs obt obu odb odd ode odf odi odn odo ods odt odu oeb oed oee oef oei oen oeo oes oet of- ofb ofd ofe off ofi ofn ofo ofs oft ofu oib oid oie oif oii oik oin oio ois oit oiu okb okd oke oki okk oko oks oku on- onb ond one onf oni onk onn ono ons ont onu oo- oob ood oof ooi ook oon ooo oos oot os- osb osd ose osf osi osk osn oso oss ost osu ot- otb otd ote otf oti otk otn oto ots ott otu ou- oud oue ouf oui ouk oun ouo ous out sbb sbd sbe sbf sbi sbk sbn sbo sbs sbt sbu sdb sdd sde sdf sdi sdk sdn sdo sds sdt sdu se- seb sed see sef sei sek sen seo ses set seu sfb sfd sfe sff sfi sfk sfn sfo sfs sft sfu sib sid sie sif sii sik sin sio sis sit siu sk- skb skd ske skf ski skk sko sks skt sku snb snd sne snf sni snk snn sno sns snt