b-u bbb bbd bbf bbi bbl bbn bbu bbx bdb bdd bdf bdi bdl bdu bdx bfb bfd bff bfi bfl bfn bfu bfx bi- bib bid bif bii bil bin biu bix blb bld blf bli bll bln blu blx bnb bnd bnf bni bnl bnn bnu bnx bub bud buf bui bul bun buu bux bxb bxd bxi bxl bxn bxx dbb dbd dbf dbi dbl dbn dbu dbx ddb ddd ddf ddi ddl ddn ddu ddx dfb dfd dff dfi dfl dfn dfu dfx di- dib did dif dii dil din diu dix dl- dlb dld dlf dli dll dlu dlx dnb dnd dnf dni dnl dnn dub dud duf dui dul dun dux dxd dxi dxl dxn dxx fbb fbd fbf fbi fbl fbn fbu fbx fdb fdd fdf fdi fdl fdn fdu fdx ffd fff ffi ffl ffn ffu ffx fib fid fif fii fil fin fiu fix flb fld flf fli fll fln flu flx fnb fnd fnf fni fnl fnn fnu fnx fub fud fuf fui ful fun fuu fux fxi fxu fxx i-d i-f ibb ibd ibf ibi ibl ibn ibu ibx idb idd idf idi idl idn idu idx ifb ifd iff ifi ifl ifn ifu ifx iib iid iif iii iil iin iiu iix il- ilb ild ilf ili ill iln ilu ilx in- inb ind inf ini inl inn inu inx iu- iub iud iui ixi ixl ixn lbb lbd lbf lbi lbl lbu lbx ldb ldd ldf ldi ldl ldn ldu lfb lfd lff lfi lfl lfn lfu lfx lib lid lif lii lil lin liu lix llb lld llf lli lll lln llu lnb lnd lni lnl lnn lnu lub lud luf lui lul lun luu lux lxd lxi lxx n-i nbb nbd nbf nbi nbl nbn nbu nbx ndb ndd ndf ndi ndl ndn ndu nfb nfd nff nfi nfl nfn nfu nib nid nif nii nil nin niu nix nlb nld nlf nli nll nln nlu nlx nnb nnf nni nnl nnn nnu nub nud nui nul nun nuu nux nxd nxl ubb ubf ubi ubl ubn ubu ubx udb udd udf udi udl udn udu udx ufd uff ufi ufl ufn ufu ufx uib uid uif uii uil uin uiu ulb uld ulf uli ull uln ulu un- unb und unf uni unl unn unu unx uun uuu uxb uxf uxu xbl xbx xdb xdf xdi xfl xfn xfx xii xin xiu xix xlb xld xlf xli xnu xui xul xun xxi xxl xxx