b-u bbb bbf bbi bbm bbn bbo bbs bbu bfb bff bfi bfm bfn bfo bfs bfu bi- bib bif bii bim bin bio bis biu bmb bmf bmi bmm bmn bmo bms bmu bnb bnf bni bnn bno bns bnu bob bof boi bom bon boo bos bou bsb bsf bsi bsm bsn bso bss bsu bub buf bui bum bun buo bus buu fbb fbf fbi fbm fbn fbo fbs fbu fff ffi ffm ffn ffo ffs ffu fib fif fii fim fin fis fiu fmb fmf fmi fmm fmn fmo fms fmu fnb fnf fni fnm fnn fns fnu fob fof foi fom fon foo fos fou fsb fsf fsi fsm fsn fso fss fsu fub fuf fui fum fun fuo fus fuu i-f ibb ibf ibi ibm ibn ibo ibs ibu ifb iff ifi ifm ifn ifo ifs ifu iib iif iii iim iin iio iis iiu im- imb imf imi imm imn imo ims imu in- inb inf ini inm inn ino ins inu io- iob iof ioi iom ion ioo ios iou is- isb isf isi ism isn iso iss isu iu- iub iui ium ius m-f m-o mbb mbf mbi mbm mbo mbs mbu mfb mff mfi mfm mfn mfo mfs mfu mi- mib mif mii mim min mio mis miu mmb mmf mmi mmm mmn mmo mms mmu mnb mnf mni mnm mnn mno mns mnu mob mof moi mom mon moo mos mou msb msf msi msm msn mso mss msu mub muf mui mum mun mus muu n-i nbb nbf nbi nbm nbn nbo nbs nbu nfb nff nfi nfn nfo nfs nfu nib nif nii nim nin nio nis niu nmb nmi nmm nmn nmo nms nmu nnb nnf nni nnm nnn nno nns nnu no- nob nof noi nom non noo nos nou nsb nsf nsi nsm nsn nso nss nsu nub nui num nun nuo nus nuu o-i ob- obb obf obi obm obn obo obs obu of- ofb off ofi ofm ofn ofo ofs ofu oib oif oii oim oin oio ois oiu om- omb omf omi omm omn omo oms omu on- onb onf oni onn ono ons onu oo- oob oof ooi oom oon ooo oos os- osb osf osi osm osn oso oss osu ou- ouf oui oum oun ouo ous sbb sbf sbi sbm sbn sbo sbs sbu sfb sff sfi sfm sfn sfo sfs sfu sib sif sii sim sin sio sis siu smb smf smi smm smn smo sms smu snb snf sni snm snn sno sns snu sob sof soi som son soo sos sou ss- ssb ssf ssi ssm ssn sso sss ssu sub suf sui sum sun suo sus suu ubb ubf ubi ubn ubo ubs ubu uff ufi ufm ufn ufo ufs ufu uib uif uii uim uin uio uis uiu um- umb umf umi umm umn umo ums umu un- unb unf uni unm unn uno uns unu uob uom uon uoo uos usb usf usi usm usn uso uss usu uum uun uus uuu