10 DEFINT A-Z
20 DIM E(1000)
30 FOR I=0 TO 999
40 FOR J=I-1 TO 0 STEP -1
50 IF E(J)=E(I) THEN E(I+1)=I-J: GOTO 80
60 NEXT J
70 E(I+1)=0
80 NEXT I
90 FOR I=0 TO 9: PRINT E(I);: NEXT
95 PRINT
100 FOR I=990 TO 999: PRINT E(I);: NEXT