fff ffi ffn ffo ffs ffu ffx fif fii fin fis fiu fix fnf fni fnn fns fnu fnx fof foi fon foo fos fou fox fsf fsi fsn fso fss fsu fsx fuf fui fun fuo fus fuu fux fxi fxs fxu fxx i-f iff ifi ifn ifo ifs ifu ifx iif iii iin iio iis iiu iix in- inf ini inn ino ins inu inx io- iof ioi ion ioo ios iou is- isf isi isn iso iss isu iu- iui ius ixi ixn n-i nff nfi nfn nfo nfs nfu nif nii nin nio nis niu nix nnf nni nnn nno nns nnu no- nof noi non noo nos nou nox nsf nsi nsn nso nss nsu nsx nui nun nuo nus nuu nux o-i of- off ofi ofn ofo ofs ofu ofx oif oii oin oio ois oiu on- onf oni onn ono ons onu onx oo- oof ooi oon ooo oos oox os- osf osi osn oso oss osu osx ou- ouf oui oun ouo ous ox- oxf oxi oxn oxo oxx sff sfi sfn sfo sfs sfu sfx sif sii sin sio sis siu six snf sni snn sno sns snu sof soi son soo sos sou sox ss- ssf ssi ssn sso sss ssu ssx suf sui sun suo sus suu sux sxi sxn sxs sxu uff ufi ufn ufo ufs ufu ufx uif uii uin uio uis uiu un- unf uni unn uno uns unu unx uon uoo uos uox usf usi usn uso uss usu usx uun uus uuu uxf uxo uxu xfn xfs xfx xii xin xio xis xiu xix xno xns xnu xof xoi xon xoo xos xox xsi xss xui xun xus xxi xxo xxx