d = [
    ['a', 'b', 'c'],
    ['d', 'e', 'f'],
    ['g', 'h', 'i']
]
  # a d g
# print(d[0][0])
# print(d[1][0])
# print(d[2][0])

# for i in range(0,2+1):
#     print(d[i][0])

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