10 DIM a(10,10)
20 FOR i=1 TO 10: FOR j=1 TO 10
30 LET a(i,j)=INT (RND*20)+1
40 NEXT j: NEXT i
50 LET b=0: REM flag to abort loops
60 FOR i=1 TO 10: FOR j=1 TO 10
70 PRINT (" " AND a(i,j)<10);a(i,j);" ";
80 IF a(i,j)=20 THEN LET i=10: LET j=10: LET b=1: REM abort loops
90 NEXT j
100 IF b=0 THEN PRINT
110 NEXT i
120 STOP