b-u bbb bbh bbi bbn bbo bbr bbu bhb bhh bhi bho bhr bhu bi- bib bih bii bin bio bir biu bnb bni bnn bno bnr bnu bob boh boi bon boo bor bou brb brh bri brn bro brr bru bub buh bui bun buo bur buu h-i hbb hbh hbi hbn hbo hbr hbu hhb hhh hhi hhn hho hhr hhu hib hih hii hin hio hir hiu hnb hnh hnn hno hnu hob hoh hoi hon hoo hor hou hr- hrb hrh hri hrn hro hrr hru hub huh hui hun huo hur huu ibb ibh ibi ibn ibo ibr ibu ihb ihh ihi ihn iho ihr ihu iib iih iii iin iio iir iiu in- inb inh ini inn ino inr inu io- iob ioh ioi ion ioo ior iou ir- irb iri irn iro irr iru iu- iub iui iur n-i nbb nbi nbn nbo nbr nbu nhb nhh nhi nhn nhr nhu nib nih nii nin nio nir niu nnb nnh nni nnn nno nnu no- nob noh noi non noo nor nou nrb nri nrn nro nrr nru nub nuh nui nun nuo nur nuu o-i ob- obb obh obi obn obo obr obu ohh ohi ohn oho ohr ohu oib oii oin oio oir oiu on- onb onh oni onn ono onr onu oo- oob ooh ooi oon ooo oor or- orb orh ori orn oro orr oru ou- ouh oui oun ouo our rbb rbh rbi rbn rbo rbr rbu rh- rhb rhh rhi rhn rho rhr rhu rib rih rii rin rio rir rnb rnh rni rnn rno rnr rnu rob roh roi ron roo ror rou rrb rrh rri rrn rrr rru rub ruh rui run ruo rur ruu ubb ubh ubi ubn ubo ubr ubu uhb uhh uhi uho uhr uhu uib uii uin uio uir uiu un- unb unh uni unn uno unr unu uob uon uoo uor ur- urb uri urn uro urr uru uun uur uuu