\begin{tikzpicture}[scale=2.54] % dpic version 2020.03.01 option -g for TikZ and PGF 1.01 \ifx\dpiclw\undefined\newdimen\dpiclw\fi \global\def\dpicdraw{\draw[line width=\dpiclw]} \global\def\dpicstop{;} \dpiclw=0.8bp \dpiclw=0.8bp {\sf \global\let\dpicshdraw=\dpicdraw\global\def\dpicdraw{} \global\def\dpicstop{--} \dpicshdraw[fill=white!100!black] \dpicdraw (0.502778,0.324448) --(0.377778,0.324448) --(0.377778,-0.275552) --(0.627778,-0.275552) --(0.627778,0.324448) --(0.502778,0.324448)\dpicstop cycle; \global\let\dpicdraw=\dpicshdraw\global\def\dpicstop{;} \dpicdraw (0.627778,-0.125552) --(0.377778,-0.125552)\dpicstop \dpicdraw (0.627778,0.024448) --(0.377778,0.024448)\dpicstop \dpicdraw (0.627778,0.174448) --(0.377778,0.174448)\dpicstop \dpicdraw[fill=white](0.502778,-0.200552) circle (0.007874in)\dpicstop \dpicdraw[fill=white](0.502778,-0.050552) circle (0.007874in)\dpicstop \dpicdraw[fill=white](0.502778,0.099448) circle (0.007874in)\dpicstop \dpicdraw[fill=white](0.502778,0.249448) circle (0.007874in)\dpicstop \dpiclw=0.4bp \filldraw[line width=0bp](0.311111,-0.220552) --(0.377778,-0.200552) --(0.311111,-0.180552) --cycle\dpicstop \dpicdraw (0.368111,-0.200552) --(0.227778,-0.200552)\dpicstop \draw (0.227778,-0.200552) node[left=-2bp]{L1}; \filldraw[line width=0bp](0.311111,0.229448) --(0.377778,0.249448) --(0.311111,0.269448) --cycle\dpicstop \dpicdraw (0.368111,0.249448) --(0.227778,0.249448)\dpicstop \draw (0.227778,0.249448) node[left=-2bp]{L4}; \draw (0.077778,0.044448) node{$\vdots$}; \filldraw[line width=0bp](0.694444,-0.180552) --(0.627778,-0.200552) --(0.694444,-0.220552) --cycle\dpicstop \dpicdraw (0.637445,-0.200552) --(0.877778,-0.200552)\dpicstop \draw (0.877778,-0.200552) node[right=-2bp]{R1}; \filldraw[line width=0bp](0.694444,0.269448) --(0.627778,0.249448) --(0.694444,0.229448) --cycle\dpicstop \dpicdraw (0.637445,0.249448) --(0.877778,0.249448)\dpicstop \draw (0.877778,0.249448) node[right=-2bp]{R4}; \draw (1.027778,0.044448) node{$\vdots$}; \filldraw[line width=0bp](0.547154,-0.146931) --(0.502778,-0.200552) --(0.569342,-0.180213) --cycle\dpicstop \dpicdraw (0.510821,-0.195189) --(0.652778,-0.100552)\dpicstop \draw (0.652778,-0.100552) node[right=-2bp]{T1}; \filldraw[line width=0bp](0.547154,0.303069) --(0.502778,0.249448) --(0.569342,0.269787) --cycle\dpicstop \dpicdraw (0.510821,0.254811) --(0.652778,0.349448)\dpicstop \draw (0.652778,0.349448) node[right=-2bp]{T4}; 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