The check matrix of a [49,27,9]2.

1000000000000000000000001100101001001101100110100
0100000000000000000001010100100111001001110000000
0010000000000000000000011001010010011011001100110
0001000000000000000001100011011101001010000010010
0000100000000000000000110010100100110110011000001
0000010000000000000001100000011011110000010110011
0000001000000000000000001010100100111001001110011
0000000100000000000000010101001001110010011100010
0000000010000000000000101010010011100100111000110
0000000001000000000001001111101011100110101100000
0000000000100000000001010101000100010100111010001
0000000000010000000001011110010000000110011100100
0000000000001000000001110110110011010101011010011
0000000000000100000000101111001000000011001110011
0000000000000010000000100111110101110011010110110
0000000000000001000001001011000110000001111100100
0000000000000000100001110111111000001100101110001
0000000000000000010001110010101101101101010110100
0000000000000000001001011100011111011010011010010
0000000000000000000101001010010011011001100010000
0000000000000000000011011110110101101010100110001
0000000000000000000000000000000000000000000001111

The weight distribution:

A'0= 1, A'4= 1, A'12= 826, A'13= 3584, A'14= 5460, A'15= 3584, A'16= 20296, A'17= 76704, A'18= 114552, A'19= 76704, A'20= 113508, A'21= 378336, A'22= 568764, A'23= 378336, A'24= 206998, A'25= 449600, A'26= 672720, A'27= 449600, A'28= 145510, A'29= 131520, A'30= 198540, A'31= 131520, A'32= 34839, A'33= 8736, A'34= 12600, A'35= 8736, A'36= 2299, A'37= 96, A'38= 228, A'39= 96, A'40= 10.

A0= 1, A9= 436, A10= 3031, A11= 9903, A12= 16536, A13= 46497, A14= 202416, A15= 460560, A16= 643910, A17= 1284648, A18= 3159180, A19= 5063692, A20= 5975976, A21= 8403132, A22= 12827264, A23= 14904288, A24= 14186244, A25= 14330816, A26= 14509170, A27= 12259554, A28= 9040040, A29= 6576678, A30= 4561200, A31= 2787152, A32= 1530273, A33= 791928, A34= 382108, A35= 164316, A36= 63640, A37= 23036, A38= 7200, A39= 2112, A40= 660, A41= 108, A42= 15, A43= 7, A45= 1.