-- PREWHERE should fail
1	0
1	1
0	0	0	0
0	0	6	0
0	1
1	0
1
1
0
1
1
1
1
1
0
1
1
0
1
1
1
1
0
1
1
1
1
1
1	0	1	1
1	1	1	1
1	1	1	0