<table align="left"><tr valign="top"><td>[[Image:re-8.png|thumb|right|280px|Example of using '''repetition'''.]]</td><td>[[Image:re-9.png|thumb|right|250px|Example of using '''grouping'''.]]</td><td>[[Image:re-10.png|thumb|right|250px|Example of using '''or condition with grouping'''.]]</td></tr></table>

=INVESTIGATION 1: SIMPLE &amp; COMPLEX REGULAR EXPRESSIONS=