-er b-u bbb bbe bbi bbm bbn bbo bbr bbu be- beb bee bei bem ben beo ber beu bi- bib bie bii bim bin bio bir biu bmb bme bmi bmm bmn bmo bmr bmu bnb bne bni bnn bno bnr bnu bob boe boi bom bon boo bor bou brb bre bri brm brn bro brr bru bub bue bui bum bun buo bur buu ebb ebe ebi ebm ebn ebo ebr ebu eeb eee eem een eeo eer eib eie eii eim ein eio eir eiu em- emb eme emi emm emn emo emr emu en- enb ene eni enm enn eno enr enu eo- eob eoe eoi eom eon eoo eor eou erb ere eri erm ern ero err eru eu- eub eue eui eun eur ibb ibe ibi ibm ibn ibo ibr ibu ie- iee iei iem ien ier iib iie iii iim iin iio iir iiu im- imb ime imi imm imn imo imu in- inb ine ini inm inn ino inr inu io- iob ioe ioi iom ion ioo ior iou ir- irb ire iri irm irn iro irr iru iu- iub iue iui ium iur m-o m-r mbb mbe mbi mbm mbo mbr mbu meb mee mei mem men meo mer meu mi- mib mie mii mim min mio mir miu mmb mme mmi mmm mmn mmo mmr mmu mnb mne mni mnm mnn mno mnr mnu mob moe moi mom mon moo mor mou mrb mre mri mrm mrn mro mrr mru mub mue mui mum mun mur muu n-i nbb nbe nbi nbm nbn nbo nbr nbu ne- neb nee nei nem nen neo ner neu nib nie nii nim nin nio nir niu nmb nme nmi nmm nmn nmo nmr nmu nnb nne nni nnm nnn nno nnu no- nob noe noi nom non noo nor nou nrb nre nri nrm nrn nro nrr nru nub nue nui num nun nuo nur nuu o-i ob- obb obe obi obm obn obo obr obu oeb oee oei oem oen oeo oer oib oie oii oim oin oio oir oiu om- omb ome omi omm omn omo omr omu on- onb one oni onn ono onr onu oo- oob ooi oom oon ooo oor or- orb ore ori orm orn oro orr oru ou- oue oui oum oun ouo our rbb rbe rbi rbm rbn rbo rbr rbu re- reb ree rei rem ren reo rer reu rib rie rii rim rin rio rir rmb rme rmi rmm rmn rmo rmr rnb rni rnm rnn rno rnr rnu rob roe roi rom ron roo ror rou rrb rri rrm rrn rrr rru rub rue rui rum run ruo rur ruu ubb ube ubi ubn ubo ubr ubu ueb uee uei uem uen uer uib uie uii uim uin uio uir uiu um- umb ume umi umm umn umo umr umu un- unb une uni unm unn uno unr unu uob uoe uom uon uoo uor ur- urb ure uri urm urn uro urr uru uue uum uun uur uuu