Venn diagrams

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\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{calc}
\begin{document}
\tikzstyle{reverseclip}=[insert path={(current page.north east) --
  (current page.south east) --
  (current page.south west) --
  (current page.north west) --
  (current page.north east)}
]
\tikzset{
    venn0/.code={
        \begin{scope}
            \begin{pgfinterruptboundingbox}
            \path  [clip] (-90:0.7cm) circle [radius=1cm] [reverseclip];
            \path  [clip] (30:0.7cm) circle [radius=1cm] [reverseclip];
            \path  [clip] (-210:0.7cm) circle [radius=1cm] [reverseclip];
            \end{pgfinterruptboundingbox}
            \fill [orange] (-2,-2) rectangle (2,2);
        \end{scope}
    },
    venn1/.code={
        \begin{scope}
            \begin{pgfinterruptboundingbox}
            \path  [clip] (-90:0.7cm) circle [radius=1cm];
            \path  [clip] (30:0.7cm) circle [radius=1cm] [reverseclip];
            \path  [clip] (-210:0.7cm) circle [radius=1cm] [reverseclip];
            \end{pgfinterruptboundingbox}
            \fill [orange] (-2,-2) rectangle (2,2);
        \end{scope}
    },
    venn2/.code={
        \begin{scope}
            \begin{pgfinterruptboundingbox}
            \path  [clip] (-90:0.7cm) circle [radius=1cm] [reverseclip];
            \path  [clip] (30:0.7cm) circle [radius=1cm];
            \path  [clip] (-210:0.7cm) circle [radius=1cm] [reverseclip];
            \end{pgfinterruptboundingbox}
            \fill [orange] (-2,-2) rectangle (2,2);
 
 
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