b-u bbb bbi bbm bbn bbo bbs bbt bbu bi- bib bii bim bin bio bis bit biu bmb bmi bmm bmn bmo bms bmt bmu bnb bni bnn bno bns bnt bnu bob boi bom bon boo bos bot bou bsb bsi bsm bsn bso bss bst bsu btb bti btm btn bto bts btt btu bub bui bum bun buo bus but buu ibb ibi ibm ibn ibo ibs ibt ibu iib iii iim iin iio iis iit iiu im- imb imi imm imn imo ims imt imu in- inb ini inm inn ino ins int inu io- iob ioi iom ion ioo ios iot iou is- isb isi ism isn iso iss ist isu itb iti itm itn ito its itt itu iu- iub iui ium ius iut m-o mbb mbi mbm mbo mbs mbt mbu mi- mib mii mim min mio mis mit miu mmb mmi mmm mmn mmo mms mmt mmu mnb mni mnm mnn mno mns mnt mnu mob moi mom mon moo mos mot mou msb msi msm msn mso mss mst msu mtb mti mtm mtn mto mts mtt mtu mub mui mum mun mus mut muu n-i nbb nbi nbm nbn nbo nbs nbt nbu nib nii nim nin nio nis nit niu nmb nmi nmm nmn nmo nms nmt nmu nnb nni nnm nnn nno nns nnt nnu no- nob noi nom non noo nos not nou nsb nsi nsm nsn nso nss nst nsu ntb nti ntm ntn nto nts ntt ntu nub nui num nun nuo nus nut nuu o-i ob- obb obi obm obn obo obs obt obu oib oii oim oin oio ois oit oiu om- omb omi omm omn omo oms omt omu on- onb oni onn ono ons ont onu oo- oob ooi oom oon ooo oos oot os- osb osi osm osn oso oss ost osu ot- otb oti otm otn oto ots ott otu ou- oui oum oun ouo ous out sbb sbi sbm sbn sbo sbs sbt sbu sib sii sim sin sio sis sit siu smb smi smm smn smo sms smt smu snb sni snm snn sno sns snt snu sob soi som son soo sos sot sou ss- ssb ssi ssm ssn sso sss sst ssu stb sti stm stn sto sts stt stu sub sui sum sun suo sus sut suu tbb tbi tbm tbn tbo tbs tbt tbu tib tii tim tin tio tis tit tiu tmb tmi tmm tmn tmo tms tmt tmu tnb tni tnm tnn tno tns tnt to- tob toi tom ton too tos tot tou tsb tsi tsm tsn tso tss tst tsu ttb tti ttm ttn tto tts ttt ttu tub tui tum tun tuo tus tut tuu ubb ubi ubn ubo ubs ubt ubu uib uii uim uin uio uis uit uiu um- umb umi umm umn umo ums umt umu un- unb uni unm unn uno uns unt unu uob uom uon uoo uos uot usb usi usm usn uso uss ust usu utb uti utm utn uto uts utt utu uum uun uus uut uuu