gus_demo : tf_validation_pattern the field :
validation_pattern_id name pattern New tf_validation_pattern
1 email ^.+@[^\\.].*\\.[a-z]{2,}$ Delete Edit
2 American phone ^(?:\\([2-9]\\d{2}\\)\\... Delete Edit
3 American postal code ^\\d{5}-\\d{4}|\\d{5}|[A- Delete Edit
4 five digit zipcode ^\\d{5}$ Delete Edit
5 zip+4 zipcode ^\\d{5}-\\d{4}$ Delete Edit
6 URL ^(ht|f)tp( Delete Edit

Read the documentation.