lookup TeXkern {
  lookupflag 0;
    pos E X -125;
    pos T <0 0 -166 0> E  <0 -235 0 0>;
} TeXkern;

feature tkrn {
  script DFLT;
     language dflt ;
      lookup TeXkern;
  script latn;
     language dflt ;
      lookup TeXkern;

} tkrn;