The vector equations of two lines $L_1$ and $L_2$ are given by

$L_1: \mathbf{r} = 2\hat{\mathbf{i}}+9\hat{\mathbf{j}}+13\hat{\mathbf{k}}+\lambda(\hat{\mathbf{i}}+2\hat{\mathbf{j}}+3\hat{\mathbf{k}})$
$L_2: \mathbf{r} = -3\hat{\mathbf{i}}+7\hat{\mathbf{j}}+p\hat{\mathbf{k}}+\mu(-\hat{\mathbf{i}}+2\hat{\mathbf{j}}-3\hat{\mathbf{k}})$

Then the lines $L_1$ and $L_2$ are