PROGRAM KNOBELEI(OUTPUT);

   CONST MAX=80;

   VAR   A, B, I, J, Z: INTEGER;
         ZEILE, NEU: ARRAY[1..MAX] OF INTEGER;

BEGIN
   ZEILE[1] := 1;  ZEILE[2] := 0;
   WRITELN("1");

   REPEAT  (******* ZEILE *******)
      A := ZEILE[1];   I := 1;   J := 1;
      REPEAT  (******* GRUPPE *******)
         Z := 0;
         REPEAT  (******* ZIFFER *******)
            Z := Z + 1;
            I := I + 1;   B := ZEILE[I]
         UNTIL A<>B;
         NEU[J] := Z;   NEU[J+1] := A;   J := J + 2;
         A := B
      UNTIL B=0;
      ZEILE[J] := 0;
      FOR I := 1 TO J-1 DO BEGIN
                           ZEILE[I] := NEU[I];
                           WRITE( ZEILE[I] :1 )
                           END;
      WRITELN
   UNTIL J>MAX
END.