# how to find distance matrix in order?

After defining:

```
helm111 = {'1': ['2', '3', '4'], '2': ['5', '4'], '3': ['6', '4'], '4': ['7']}
Graph(helm111)
D99 = Graph(helm111).distance_matrix()
```

i need to find distance matrix in order of vertices 1,2,3,5,6,8,4,7,9,11,10.