Extension:
[48,8,18] to [52,9,18]
Number of the matrices for extension:1

Weights:
18 27 36 45 
Maximal number for proportional coordinatesTill dimension 1--52;
Till dimension 2--52;
Till dimension 3--52;
Till dimension 4--52;
Till dimension 5--52;
Till dimension 6--52;
Till dimension 7--52;
Till dimension 8--52;
Till dimension 9--52;

 The minimum distace of the dual codes is:
2
============================================

Start matrix
1 9 52 1
1111111111111111100000000000000000000000000100000000
2222222222221110022222222222000000000000000010000000
2222222221112220022211111100220000000000000001000000
2222221112222220011122211100002200000000000000100000
2221112222222220011111122200000022000000000000010000
0001112222221110000000022200000000220000000000001000
0002221112221110000022200000000000002200000000000100
0002222221111110022200000000000000000011000000000010
0000000000000000000000000000000000000000111000000001
?9 52 3  99999991_9 1
1111111111111111100000000000000000000000000100000000
2222222222221110022222222222000000000000000010000000
2222222221112220022211111100220000000000000001000000
2222221112222220011122211100002200000000000000100000
2221112222222220011111122200000022000000000000010000
0001112222221110000000022200000000220000000000001000
0002221112221110000022200000000000002200000000000100
0002222221111110022200000000000000000011000000000010
1201201201201201212012012012121212121212111000000001
AUT: 564350976 $1z^{0}+224z^{18}+2720z^{27}+16482z^{36}+256z^{45}  dd-2$\\

DIFFERENT ENUMERATORS :1   ALL CODES: 1

    1 1 AUT: 564350976 $1z^{0}+224z^{18}+2720z^{27}+16482z^{36}+256z^{45}  dd-2$\\


Extension:
[51,8,18] to [52,9,18]
Number of the matrices for extension:3

Weights:
18 27 36 45 
Maximal number for proportional coordinatesTill dimension 1--52;
Till dimension 2--52;
Till dimension 3--52;
Till dimension 4--52;
Till dimension 5--52;
Till dimension 6--52;
Till dimension 7--52;
Till dimension 8--52;
Till dimension 9--52;

 The minimum distace of the dual codes is:
2
============================================

Start matrix
1 9 52 1
1111111111111111100000000000000000000000000100000000
2222222222221110022222222222222222222000000010000000
2222222221112220022211111111111111100220000001000000
2222222221112220021022222222221111021210000000100000
2221110001112220000022222222201110000002200000010000
2102102102221110000022222222202220000002100000001000
0000000002102102100022222222202100000000000000000100
2222222220000000000022211100000000000000011000000010
0000000000000000000000000000000000000000000000000001
?9 52 3  99999991_9 1
1111111111111111100000000000000000000000000100000000
2222222222221110022222222222222222222000000010000000
2222222221112220022211111111111111100220000001000000
2222222221112220021022222222221111021210000000100000
2221110001112220000022222222201110000002200000010000
2102102102221110000022222222202220000002100000001000
0000000002102102100022222222202100000000000000000100
2222222220000000000022211100000000000000011000000010
0000000002221110000012012012002220000000012000000001
AUT: 269568 $1z^{0}+156z^{18}+2600z^{27}+16926z^{36}  dd-3$\\

Start matrix
1 9 52 2
1111111111111111100000000000000000000000000100000000
2222221111110000022222222222222000000000000010000000
2221112221110000022222211111100220000000000001000000
2221111112220000022211122211100002200000000000100000
1111112222220000022222222222200000022000000000010000
1112221112220000022222211111100000000220000000001000
0002222220002220022211100000000000000002200000000100
0002222220002220000000022211100000000000011000000010
0000000000000000000000000000000000000000000000000001

Start matrix
1 9 52 3
1111111111111111100000000000000000000000000100000000
2222221111110000022222222222222000000000000010000000
2221112221110000022222211111100220000000000001000000
2221111112220000022211122211100002200000000000100000
2222221112222220022211100022200000022000000000010000
2222222221112220022200011122200000000220000000001000
0000002222222220000022222200000000000002200000000100
0000002222222220022200000022200000000000011000000010
0000000000000000000000000000000000000000000000000001

DIFFERENT ENUMERATORS :1   ALL CODES: 1

    1 1 AUT: 269568 $1z^{0}+156z^{18}+2600z^{27}+16926z^{36}  dd-3$\\