Not just that, but also the last row is probably 180° rotated. The last 5 entries (labelled as "no nu n'a n'e n'i") do read "na ne ni no nu" (なねにのぬ) after rotat

Not just that, but also the last row is probably 180° rotated. The last 5 entries (labelled as "no nu n'a n'e n'i") do read "na ne ni no nu" (なねにのぬ) after rotation. Remaining 3 entries also seem to be similarly transformed, compared to other letters that are at most missing some parts (e.g. "da" た).