extracting and concatenate parts of a string
<p>I have a huge number of strings to process in the following manner.
For each string,the characters from position 3 through 15 need to be extracted ,except position 9.</p>

<p>So,for an input "F01MBBSGB50AGFX0000000000", the output will be "MBBSGB50AGFX".</p>

<p>The obvious way is <code>s[3:11] + s[12:15]</code>.<br>
But given the sheer magnitude of data that needs to be processed,I need help on the recommended way to do this.</p>
