email address format
^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$

social security number format
\d{3,3}-\d{2,2}-\d{4,4}$

alphanumeric (no special characters)
[0-9a-zA-Z\s]*

10 digit long number format
\d{10,10}$

between a 7 and 9 digit long number format
\d{7,9}$

phone number with area code (allows either dashes or periods in between the numbers)
\b\d{3}[-.]?\d{3}[-.]?\d{4}\b