lay down the read boxes from left to right in tensor product form.

2.  Under each tensor component $x$ of $T$, write down $\veps_i(x)$-many 1s followed by $\vphi_i(x)$-many 0s. Then, from the long sequence of mixed 0s and 1s, successively cancel out every occurrence of (0,1) pair until we arrive at a sequence of 1s followed by 0s, reading from left to right. This is called the $i$-signature of $T$.

3.  Denote by $T'$, the tableau obtained from $T$, by replacing the box $x$ corresponding to the leftmost $0$ in the $i$-signature of $T$ with the box $\fit x$.

    -   If $T'$ is a large tableau, it is automatically marginally large. We define $\fit T$ to be $T'$.

    -   If $T'$ is not large, then we define $\fit T$ to be the large tableau obtained by inserting one column consisting of $i$ rows to the left of the box $\fit$ acted upon. The added column should have a $k$-box at the $k$-th row for $1\leq k \leq i$.

4.  Denote by $T'$, the tableau obtained from $T$, by replacing the box $x$ corresponding to the rightmost $1$ in the $i$-signature of $T$ with the box $\eit x$.

    -   If $T'$ 