blockwize.py

# https://teratail.com/questions/83177

>>> import string
>>> a = string.ascii_lowercase
>>> print("\n".join(
...             [" ".join(line)
...              for r in [range(i * 16, i * 16 + 16, 1) for i in range(int((len(a) + 15) / 16))]
...              for line in [[a[j] for j in r if j < len(a) and (j % 4 < 2)],
...                           [a[j] for j in r if j < len(a) and (j % 4 >= 2)]]]))
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