-ol b-u bbb bbi bbk bbl bbn bbo bbs bbt bbu bi- bib bii bik bil bin bio bis bit biu bkb bkk bkl bkn bko bks bkt blb bli blk bll bln blo bls blt blu bnb bni bnk bnl bnn bno bns bnt bnu bob boi bok bol bon boo bos bot bou bsb bsi bsk bsl bsn bso bss bst bsu btb bti btk btl btn bto bts btt btu bub bui buk bul bun buo bus but buu ibb ibi ibk ibl ibn ibo ibs ibt ibu iib iii iil iin iio iis iit iiu ikb iki ikk ikl iko iks ikt iku il- ilb ili ilk ill iln ilo ils ilt ilu in- inb ini ink inl inn ino ins int inu io- iob ioi iol ion ioo ios iot iou is- isb isi isk isl isn iso iss ist isu itb iti itk itl itn ito its itt itu iu- iub iui ius iut k-t kbb kbi kbk kbl kbn kbo kbs kbu kib kii kik kil kin kio kis kit kiu kkb kki kkk kkl kkn kks kkt kku kl- klb kli klo kls klt klu kn- kni knk knl knn kno knt knu kob koi kok kol kon koo kos kot kou ksb ksi ksk ksl ksn kso kss kst ksu ktb ktk ktl ktn kto kts ktt ktu kub kui kuk kul kun kus kut kuu lbb lbi lbk lbl lbo lbs lbt lbu lib lii lik lil lin lio lis lit liu lkb lkl lks lkt llb lli llk lll lln llo lls llt llu lnb lni lnk lnl lnn lno lns lnt lnu lob loi lok lol lon loo los lot lou lsb lsi lsk lsl lsn lso lss lst lsu ltb lti ltk ltl lto lts ltt ltu lub lui luk lul lun luo lus lut luu n-i nbb nbi nbk nbl nbn nbo nbs nbt nbu nib nii nik nil nin nio nis nit niu nki nkk nkn nko nks nkt nku nlb nli nlk nll nln nlo nls nlt nlu nnb nni nnk nnl nnn nno nns nnt nnu no- nob noi nok nol non noo nos not nou nsb nsi nsk nsl nsn nso nss nst nsu ntb nti ntk ntn nto nts ntt ntu nub nui nuk nul nun nuo nus nut nuu o-i ob- obb obi obk obl obn obo obs obt obu oib oii oik oil oin oio ois oit oiu okb oki okk okl oko oks oku olb oli olk oll oln olo ols olt olu on- onb oni onk onl onn ono ons ont onu oo- oob ooi ook ool oon ooo oos oot os- osb osi osk osl osn oso oss ost osu ot- otb oti otk otl otn oto ots ott otu ou- oui ouk oul oun ouo ous out sbb sbi sbk sbl sbn sbo sbs sbt sbu sib sii sik sil sin sio sis sit siu sk- skb ski skk skl sko sks skt sku slb sli slk sll sln slo sls slt slu snb sni snk snl snn sno sns snt snu sob soi sok sol son soo sos sot sou ss- ssb ssi ssk ssl ssn sso sss sst ssu stb sti stk stl stn sto sts stt stu sub sui suk sul sun suo sus sut suu tbb tbi tbk tbl tbn tbo tbs tbt tbu tib tii tik til tin tio tis tit tiu tkb tkk tkl tko tks tkt tli tlk tll tln tlo tls tlt tlu tnb tni tnk tnl tnn tno tns tnt to- tob toi tok tol ton too tos tot tou tsb tsi tsk tsl tsn tso tss tst tsu ttb tti ttk ttl ttn tto tts ttt ttu tub tui tuk tul tun tuo tus tut tuu ubb ubi ubk ubl ubn ubo ubs ubt ubu uib uii uil uin uio uis uit uiu ukb uki ukk ukl ukn uku ulb uli ulk ull uln ulo uls ult ulu un- unb uni unk unl unn uno uns unt unu uob uok uol uon uoo uos uot usb usi usk usl usn uso uss ust usu utb uti utk utl utn uto uts utt utu uun uus uut uuu