Bgan #6688 is currently classified with a background of Horizontals:
https://opensea.io/assets/ethereum/0x31385d3520bced94f77aae104b406994d8f2168c/6688
The background appears to be misclassified and should be Horizontal 1s instead.
1.4.29 HORIZONTAL 1s
HORIZONTALS where at least 75% (24 lines) have a width of 1 pixel.I count at least 24 lines that have a width of 1 pixel. In fact, I think all of the lines are 1 pixel, but at least 75% are for sure.