100 FOR B1= 1 TO 44
110 FOR B2=B1+1 TO 45
120 FOR B3=B2+1 TO 46
130 FOR B4=B3+1 TO 47
140 FOR B5=B4+1 TO 48
150 FOR B6=B5+1 TO 49
160 I=I+1
170 PRINT I;" ";B1;B2;B3;B4;B5;B6
180 NEXT B6
190 NEXT B5
200 NEXT B4
210 NEXT B3
220 NEXT B2
230 NEXT B1
240 PRINT "FIN"