# Accessing the "Echelon basis matrix" of kernel of a Matrix

For any matrix **A** when we type

```
A.kernel()
```

It returns

```
A.kernel()
Free module of degree 45 and rank 12 over Integer Ring
Echelon basis matrix:`[ 1 0 -1][ 0 1 2][ 0 0 0]`
```

How to I access this Echelon basis matrix directly?

I have tried this

```
A.kernel.echelon_form()
```

but it says

```
TypeError: echelon_form() takes at least 2 arguments (1 given)
```