10 COLOR 1,15,8:SCREEN 2,3:FOR K=1 TO 12:Y$="":FOR Z=1TO32
40 Y$=Y$+CHR$(INT(RND(1)*256)):NEXTZ:SPRITE$(K)=Y$:NEXTK
70 S=1:FOR I=20 TO 230 STEP 60:FOR J=20 TO 170 STEP 60
90 PUT SPRITE S,(I,J),13-S:S=S+1:NEXTJ,I
110 GOTO 110