@LowerMark = [\afii57793 \afii57794 \afii57795 \afii57796 \afii57797 \afii57798 \afii57799 \afii57800 \afii57801 \afii57802 \uni05C7 \afii57839];
@NoLowerMark = [\afii57806 \uni05BA \afii57807 \afii57841 \afii57804 \afii57803 \uni05C4 \uniFB1E];

lookup AltAyin {
  lookupflag RightToLeft;
    sub \afii57682 by \uniFB20 ;
} AltAyin;

lookup ccmpAltAyin {
  lookupflag RightToLeft;
    sub [\afii57682 ]' lookup AltAyin @LowerMark;
  subtable;
    sub [\afii57682 ]' lookup AltAyin @NoLowerMark @LowerMark;
  subtable;
    sub [\afii57682 ]' lookup AltAyin @NoLowerMark @NoLowerMark @LowerMark;
} ccmpAltAyin;

feature ccmp {
  script hebr;
     language dflt ;
      lookup ccmpAltAyin;
} ccmp;