\begin{tikzpicture}[scale=2.54]%
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\draw (-0.2,-0.4) node[right=-2bp]{$S_1$:};
\draw (0.4,-0.4) node{$s_{11}$};
\draw (0.8,-0.4) node{$s_{12}$};
\draw (1.2,-0.4) node{$s_{13}$};
\draw (1.6,-0.4) node{$s_{14}$};
\draw (-0.2,-0.8) node[right=-2bp]{$S_2$:};
\draw (0.4,-0.8) node{$s_{21}$};
\draw (0.8,-0.8) node{$s_{22}$};
\draw (1.2,-0.8) node{$s_{23}$};
\draw (1.6,-0.8) node{$s_{24}$};
\draw (-0.2,-1.2) node[right=-2bp]{$S_3$:};
\draw (0.4,-1.2) node{$s_{31}$};
\draw (0.8,-1.2) node{$s_{32}$};
\draw (1.2,-1.2) node{$s_{33}$};
\draw (1.6,-1.2) node{$s_{34}$};
\draw (-0.2,-1.6) node[right=-2bp]{$S_4$:};
\draw (0.4,-1.6) node{$s_{41}$};
\draw (0.8,-1.6) node{$s_{42}$};
\draw (1.2,-1.6) node{$s_{43}$};
\draw (0,-1.9) node{$\vdots$};
\draw (2,-0.4) node{$\cdots$};
\draw (2,-0.8) node{$\cdots$};
\draw (2,-1.2) node{$\cdots$};
\draw (1.6,-1.6) node{$\cdots$};
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\end{tikzpicture}%