4 16 8

0       8       4       12
0       8       4       12
0       8       4       12
0       8       4       12
1       9       5       13
1       9       5       13
1       9       5       13
1       9       5       13
2       10      6       14
2       10      6       14
2       10      6       14
2       10      6       14
3       11      7       15
3       11      7       15
3       11      7       15
3       11      7       15

0       1       7       6
6       7       1       0
3       2       4       5
5       4       2       3
2       3       5       4
4       5       3       2
1       0       6       7
7       6       0       1
4       5       3       2
2       3       5       4
7       6       0       1
1       0       6       7
6       7       1       0
0       1       7       6
5       4       2       3
3       2       4       5


2/3 code generated from the awgn 1/2 code with 16 states and puncturing the 4th bit.
d_free=