Chapter 3.15, Problem 7MP

Given the matrices A, B, C below, find or mark as meaningless the matrices: ${\text{A}}^{\text{T}},{\text{A}}^{-1},\text{AB},\bar{\text{A}},{\text{A}}^{\text{T}}{\text{B}}^{\text{T}},{\text{B}}^{\text{T}}{\text{A}}^{\text{T}},{\text{BA}}^{\text{T}},\text{ABC,}{\text{AB}}^{\text{T}}\text{C},{\text{B}}^{\text{T}}\text{AC},{\text{A}}^{\text{t}},{\text{B}}^{\text{T}}\text{C},$ ${\text{B}}^{\text{-1}}\text{C,}{\text{C}}^{\text{-1}}\text{A},{\text{CB}}^{\text{T}}.$ $\text{A}=\left(\begin{array}{cc}1& -1\\ 0& i\end{array}\right),\text{B}=\left(\begin{array}{ccc}2& 1& -1\\ 0& 3& 5\end{array}\right),\text{C}=\left(\begin{array}{cc}0& 1\\ -1& 0\end{array}\right)$.