1 MAIN START 2 LAD GR1,A 3 LD GR0,0,GR1 4 LD GR2,2,GR1 5 LD GR3,3,GR1 6 LD GR4,4,GR1 7 LD GR5,5,GR1 8 LD GR6,6,GR1 9 LD GR7,7,GR1 10 LD GR1,1,GR1 11 RET 12 A DC 2,3,5,7,11,13,17,19 13 END