The comment was referring to the keyboard of the Olivetti typewriter. The Katakana are arranged without regard to the Roman letters on the same keys. There's so

The comment was referring to the keyboard of the Olivetti typewriter. The Katakana are arranged without regard to the Roman letters on the same keys. There's some amount of logical organization, vowels are on the top row, the タ group is on QWASZ. And next to it on DXZ is シサソ, and ス not too far away on R, but what is セ doing all the way on P? At a glance it doesn't seem to match a recent frequency analysis[1], so I have no idea what motivated this particular arrangement. [1] https://link.springer.com/article/10.3758/BF03195600 https://link.springer.com/article/10.3758/BF03195600