ddd ddf ddi ddx ddy ddz dfd dff dfi dfx dfz di- did dif dii dix diy diz dxd dxi dxx dy- dyd dyy dzd dzi fdd fdf fdi fdx ffd fff ffi ffx ffy ffz fid fif fii fix fiz fxi fxx fy- fyi fyz fzd i-d i-f idd idf idi idx idy ifd iff ifi ifx ify ifz iid iif iii iix ixi ixy iyy izi izy izz xdf xdi xfx xii xix xxi xxx xxy xyy xyz ydy yfd yff yid yif yii yiz yxy yyf yyy yyz yzf yzy zdf zfd zfx zfy zid zif zix ziz zxx zyx zzx zzy zzz

d-ix dddd didi didy dif- diff dify diii dixi dixy diyi dizi dizy dizz dxfx dxif dxii dxix dxxx dxyz dydd dyf- dyfi dyfx dyxx dyxy ffff ffii fidf fiff fifi fiii fixx fixy fizy fizz fxdd fyfi fzdz idid iffy ifid iiii ixxi izzy x-fi xdxf xidi xify xiii xixi xizi xxii xxix xxxi xxxx xxxy yidi yiff yyff yyyy zidi ziff zixi zixx ziyi zizi zizz zxid zydy zyyi zzzz

ddddd diddy dixid dizzy dxdxd ffxii fiddy fizzy if-- iiiii iyiyi xxiii xxxii xxxix xyzzy yiffy ziddi zizzi zizzy zzyzx zzzzz

diii-d xxxiii xxyyxx zyzzyx

xxxxxxx

i-ii-iii zzyzzyxx

ddddddddd

xxxxxxxxxxxx