Number of data bits (k): 4
Number of parity bits (r): 4
Number of codeword bits (n): 8
H =
[[0, 1, 1, 1, 1, 0, 0, 0],
 [1, 0, 1, 1, 0, 1, 0, 0],
 [1, 1, 0, 1, 0, 0, 1, 0],
 [1, 1, 1, 0, 0, 0, 0, 1]]
