\forall_{b \in V}~\left(\begin{array}{c} \begin{array}{l} \left(\begin{array}{c} \begin{array}{l} \left(a_{1} {\otimes} a_{2} {\otimes} \ldots {\otimes} a_{i}{\otimes} c_{1} {\otimes} c_{2} {\otimes} \ldots {\otimes} c_{k}\right) = \\ \left(d_{1} {\otimes} d_{2} {\otimes} \ldots {\otimes} d_{i}{\otimes} e_{1} {\otimes} e_{2} {\otimes} \ldots {\otimes} e_{k}\right) \end{array} \end{array}\right) \Rightarrow \\ \left(\begin{array}{c} \begin{array}{l} \left(a_{1} {\otimes} a_{2} {\otimes} \ldots {\otimes} a_{i} {\otimes} b{\otimes} c_{1} {\otimes} c_{2} {\otimes} \ldots {\otimes} c_{k}\right) = \\ \left(d_{1} {\otimes} d_{2} {\otimes} \ldots {\otimes} d_{i} {\otimes} b{\otimes} e_{1} {\otimes} e_{2} {\otimes} \ldots {\otimes} e_{k}\right) \end{array} \end{array}\right) \end{array} \end{array}\right)