Row reduce the following matrices to reduced row echelon form. $($Show your work.$)$

a$.\left[\begin{array}{ccccc}-1& 3& 0& 1& 4\\ 1& -3& 0& 0& -1\\ 2& -6& 2& 4& 0\\ 2& -6& 2& 5& 3\end{array}\right]$

c$.\left[\begin{array}{cccc}3& 1& 3& 1\\ 0& 1& 0& -2\\ 3& 2& 3& -2\\ -3& -4& -3& 7\end{array}\right]$

b$.\left[\begin{array}{ccc}2& 1& 4\\ 1& 3& 2\\ 3& -1& 6\end{array}\right]$

d$.\left[\begin{array}{cccc}2& 1& 0& -1\\ 4& 2& 3& 4\\ 2& 3& 2& 1\end{array}\right]$