Kernel-checked shard 4 of 8 for the exhaustive Sp₄(𝔽₂) detector.
The detector succeeds on 16-bit matrix block 12 (with indices 0 through 31).
The detector succeeds on 16-bit matrix block 13 (with indices 0 through 31).
The detector succeeds on 16-bit matrix block 14 (with indices 0 through 31).
The detector succeeds on 16-bit matrix block 15 (with indices 0 through 31).