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The check matrix of a [77,51,9]₂ (dual distance 5).

The first 25 rows and 72 columns are the check matrix of a [72,47,9]₂ (dual distance 9).

For more information see Inverting construction Y₁.

00001000011000101001111010001110010010110111011001101010111111000000000000101
00010000110001010011110100011100100101101110110011010101111110001000010000000
00100001100010100111101000111001001011011101100110101011111100001000010001010
01000011000101001111010001110010010110111011001101010111111000001000010001101
10000110001010011110100011100100101101110110011010101111110000000000000001111
00001100010100111101000111001001011011101100110101011111100000100000000000101
00001010010011001011000001010010011001011000001010010011001011001101011100111
00100011011111100111000100011011111100111000100011011111100111000101001101100
10101110100001111011010101110100001111011010101110100001111011000110001000010
00010100100110010110000010100100110010110000010100100110010110001110110101001
01000110111111001110001000110111111001110001000110111111001110000000000000011
01011101000011110110101011101000011110110101011101000011110110100011101000000
11111101011100011001110110000011110010010101001101000010001011001011010100101
01010100110100001000101101111110101110001100111011000001111001000110100100110
00110011101100000111100100101010011010000100010110111111010111000110100100101
00010001011011111101011100011001110110000011110010010101001101000011101000011
00001111001001010100110100001000101101111110101110001100111011000101001100011
11111010111000110011101100000111100100101010011010000100010110100101100000101
00100100000100100000100100000100100000100100000100100000100100000100111000110
01110111001110111001110111001110111001110111001110111001110111000001000100110
00111111000111111000111111000111111000111111000111111000111111000011100100100
11010001011010001011010001011010001011010001011010001011010001000000011000110
10101111010101111010101111010101111010101111010101111010101111000000000100001
00001101100001101100001101100001101100001101100001101100001101100000111100011
00000000000000000000000000000000000000000000000000000000000000011111111101010
00000000000000000000000000000000000000000000000000000000000000000000000011111

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