-ol b-u bbb bbi bbl bbn bbo bbs bbt bbu bi- bib bii bil bin bio bis bit biu blb bli bll bln blo bls blt blu bnb bni bnl bnn bno bns bnt bnu bob boi bol bon boo bos bot bou bsb bsi bsl bsn bso bss bst bsu btb bti btl btn bto bts btt btu bub bui bul bun buo bus but buu ibb ibi ibl ibn ibo ibs ibt ibu iib iii iil iin iio iis iit iiu il- ilb ili ill iln ilo ils ilt ilu in- inb ini inl inn ino ins int inu io- iob ioi iol ion ioo ios iot iou is- isb isi isl isn iso iss ist isu itb iti itl itn ito its itt itu iu- iub iui ius iut lbb lbi lbl lbo lbs lbt lbu lib lii lil lin lio lis lit liu llb lli lll lln llo lls llt llu lnb lni lnl lnn lno lns lnt lnu lob loi lol lon loo los lot lou lsb lsi lsl lsn lso lss lst lsu ltb lti ltl lto lts ltt ltu lub lui lul lun luo lus lut luu n-i nbb nbi nbl nbn nbo nbs nbt nbu nib nii nil nin nio nis nit niu nlb nli nll nln nlo nls nlt nlu nnb nni nnl nnn nno nns nnt nnu no- nob noi nol non noo nos not nou nsb nsi nsl nsn nso nss nst nsu ntb nti ntn nto nts ntt ntu nub nui nul nun nuo nus nut nuu o-i ob- obb obi obl obn obo obs obt obu oib oii oil oin oio ois oit oiu olb oli oll oln olo ols olt olu on- onb oni onl onn ono ons ont onu oo- oob ooi ool oon ooo oos oot os- osb osi osl osn oso oss ost osu ot- otb oti otl otn oto ots ott otu ou- oui oul oun ouo ous out sbb sbi sbl sbn sbo sbs sbt sbu sib sii sil sin sio sis sit siu slb sli sll sln slo sls slt slu snb sni snl snn sno sns snt snu sob soi sol son soo sos sot sou ss- ssb ssi ssl ssn sso sss sst ssu stb sti stl stn sto sts stt stu sub sui sul sun suo sus sut suu tbb tbi tbl tbn tbo tbs tbt tbu tib tii til tin tio tis tit tiu tli tll tln tlo tls tlt tlu tnb tni tnl tnn tno tns tnt to- tob toi tol ton too tos tot tou tsb tsi tsl tsn tso tss tst tsu ttb tti ttl ttn tto tts ttt ttu tub tui tul tun tuo tus tut tuu ubb ubi ubl ubn ubo ubs ubt ubu uib uii uil uin uio uis uit uiu ulb uli ull uln ulo uls ult ulu un- unb uni unl unn uno uns unt unu uob uol uon uoo uos uot usb usi usl usn uso uss ust usu utb uti utl utn uto uts utt utu uun uus uut uuu