====== Space before or after a number ======
<code regex One character before>\s(?=\d)</code>
<code regex Unlimited characters before>\s+(?=\d)</code>
<code regex One character after>(?<=\d)\s</code>
<code regex Unlimited characters after>(?<=\d)\s+</code>
Use **[ ]** instead of **\s** to match a space instead of **[\r\n\t\f\v ]**