Extension: [6,6,1] to [18,6,4] Number of the matrices for extension:1 {self-orthogonal no} Number of ones to add in the first row in the generator matrix of the codes: 3 Weights: 4 8 12 16 Maximal number for proportional coordinates in the output codes:Till dimension 1--18; Till dimension 2--18; Till dimension 3--18; Till dimension 4--18; Till dimension 5--18; Till dimension 6--18; The minimum distance of the dual codes is: 2 ======================== Start matrix 1 19 E 1110000000001000001 0000000000000100002 0000000000000010003 0000000000000001004 0000000000000000105 0000000000000000016 ?6 18 4 _6 1 111000000000100000 123000000000010000 000333000000001000 000123000000000100 000000333000000010 000000000333000001 AUT: 18662400 $1z^{0}+36z^{4}+414z^{8}+1620z^{12}+2025z^{16} dd-2$\\ DIFFERENT ENUMERATORS :1 ALL CODES: 1 1 1 AUT: 18662400 $1z^{0}+36z^{4}+414z^{8}+1620z^{12}+2025z^{16} dd-2$\\