Have a look at this example:

```
\documentclass{article}
\usepackage{imakeidx}
\makeindex[title={Index},name={myindex}]

\begin{document}
Hello world\index[myindex]{p}.

Hello world\index[myindex]{pq}.

Hello world\index[myindex]{q}.

\printindex[myindex]
\end{document}
```

Is there any way with which I can print the sequence `pq` after `q`?

I have almost zero knowledge of index-making with LaTeX. If there is any method better than the `imakeidx` package, please let me know.