Coordinates of Shogi 5x6

Hi,
It seems the coordinates for Shogi 5x6 are labelled [e, d, c, b, a, `] for the rows and [6, 5, 4, 3, 2] for the columns. As if the size of the board was actually 6x5. Maybe somewhere in the code the axes have been exchanged?

There is the same problem in Shogi 3x4, thus the problem is indeed likely due to the board not being square.