Continued numbering in subfigure of selected figures

Question

I am very confused about for the continued numbering in subfigure of selected figures.

I want format a continued numbering in subfigures of selected figures, but not for all the figures. At the same time, the numbering in figures remains. The example code is as following,

\documentclass[a4paper]{book}  
\usepackage[]{graphicx}  
\usepackage{subfigure}  

\begin{document}

\begin{figure}[!htb] %numbering in  arabic 
\renewcommand*\thesubfigure{\arabic{subfigure}}  
   \centering  
    \subfigure[]{ \label{fig:1}   
        \includegraphics[width=0.1\textwidth]{example-image-a} 
    }
    \subfigure[]{ \label{fig:2} 
        \includegraphics[width=0.1\textwidth]{example-image-b} 
    } 
   \caption{1111111111111。}\label{fig:111} 
\end{figure}
\begin{figure}[!htb]
   \centering
    \subfigure[]{ \label{fig:a} 
        \includegraphics[width=0.1\textwidth]{example-image-a} 
    }
    \subfigure[]{ \label{fig:b} 
        \includegraphics[width=0.1\textwidth]{example-image-b} 
    }   
   \caption{2222222222。}\label{fig:222} 
\end{figure}
\begin{figure}[!htb]  %numbering in continued arabic
\renewcommand*\thesubfigure{\arabic{subfigure}}
   \centering
    \subfigure[]{ \label{fig:3} 
        \includegraphics[width=0.1\textwidth]{example-image-c} 
    }   
    \subfigure[]{ \label{fig:4} 
        \includegraphics[width=0.1\textwidth]{example-image} 
    }   
   \caption{3333333。}\label{fig:3333} 
\end{figure}

\end{document}

Here is a picture for the problem.