Minus Three Numbers
17-1-8=19-10-9=15-6-9=12-5-5=
15-11-1=18-9-6=12-2-2=11-7-4=
15-10-2=10-5-5=15-4-11=17-1-12=
17-10-1=6-2-4=18-6-4=18-8-5=
18-2-13=19-6-4=13-2-6=18-5-5=
11-3-4=10-6-4=11-3-6=18-11-4=
12-4-5=19-12-1=15-2-9=17-9-2=
16-1-9=13-8-5=19-8-6=7-2-4=
15-1-8=16-10-6=18-4-5=14-2-7=
18-10-4=19-4-4=14-6-5=12-9-2=
9-7-2=15-3-11=14-9-2=19-1-4=
15-12-3=9-2-5=11-1-10=15-5-1=
18-6-5=19-15-4=14-2-10=18-11-7=
17-7-8=14-6-8=14-8-2=15-4-10=
12-3-4=16-2-13=13-9-1=15-14-1=
19-6-1=14-12-1=12-7-2=17-5-12=
19-4-5=16-1-15=16-6-2=18-1-9=
19-11-4=8-3-5=19-8-10=16-1-11=
14-6-7=14-7-3=16-9-6=18-3-10=
19-1-13=14-4-3=11-3-8=19-7-9=
14-1-12=13-7-5=12-5-6=7-1-4=