-ol b-u bbb bbf bbk bbl bbm bbn bbo bbu bfb bff bfl bfm bfn bfo bfu bkb bkf bkk bkl bkm bkn bko blb blf blk bll blm bln blo blu bmb bmf bmk bml bmm bmn bmo bmu bnb bnf bnk bnl bnn bno bnu bob bof bok bol bom bon boo bou bub buf buk bul bum bun buo buu fbb fbf fbk fbl fbm fbn fbo fbu fff ffk ffl ffm ffn ffo ffu fkb fkf fkk fkl fkm flb flf fll flm fln flo flu fmb fmf fml fmm fmn fmo fmu fnb fnf fnk fnl fnm fnn fnu fob fof fok fol fom fon foo fou fub fuf fuk ful fum fun fuo fuu kbb kbf kbk kbl kbm kbn kbo kbu kff kfm kfo kfu kkb kkk kkl kkm kkn kku kl- klb klf klm klo klu kmb kmf kmk kml kmm kmo kmu kn- knf knk knl knm knn kno knu kob kof kok kol kom kon koo kou kub kuk kul kum kun kuu lbb lbf lbk lbl lbm lbo lbu lfb lff lfk lfl lfm lfn lfo lfu lkb lkl llb llf llk lll llm lln llo llu lmb lmf lmk lml lmm lmn lmo lmu lnb lnk lnl lnm lnn lno lnu lob lof lok lol lom lon loo lou lub luf luk lul lum lun luo luu m-f m-o mbb mbf mbk mbl mbm mbo mbu mfb mff mfl mfm mfn mfo mfu mkb mkk mkl mkm mkn mko mku mlb mlf mlk mll mlm mln mlo mlu mmb mmf mmk mml mmm mmn mmo mmu mnb mnf mnk mnl mnm mnn mno mnu mob mof mok mol mom mon moo mou mub muf muk mul mum mun muu nbb nbf nbk nbl nbm nbn nbo nbu nfb nff nfk nfl nfn nfo nfu nkf nkk nkm nkn nko nku nlb nlf nlk nll nlm nln nlo nlu nmb nmk nml nmm nmn nmo nmu nnb nnf nnk nnl nnm nnn nno nnu no- nob nof nok nol nom non noo nou nub nuk nul num nun nuo nuu ob- obb obf obk obl obm obn obo obu of- ofb off ofl ofm ofn ofo ofu okb okk okl oko oku olb olf olk oll olm oln olo olu om- omb omf oml omm omn omo omu on- onb onf onk onl onn ono onu oo- oob oof ook ool oom oon ooo ou- ouf ouk oul oum oun ouo ubb ubf ubk ubl ubn ubo ubu uff ufl ufm ufn ufo ufu ukb ukf ukk ukl ukn uku ulb ulf ulk ull ulm uln ulo ulu um- umb umf uml umm umn umo umu un- unb unf unk unl unm unn uno unu uob uok uol uom uon uoo uum uun uuu