In the context of a regular expression (RegEx), a character class is a set of characters enclosed within square brackets that allows you to match one character in the set.

A hyphen (-) inside a character class specifies a range of characters where the left and right operands are the respective lower and upper bounds of the range. For example:

• is the same as .
• is the same as .
• is the same as .

In addition, if you use a caret (^) as the first character inside a character class, it will match anything that is not in that range. For example, matches any character that is not a digit in the inclusive range from to . It's important to note that, when used outside of (immediately preceding) a character or character class, the caret matches the first character in the string against that character or set of characters.

Task

Write a RegEx that will match a string satisfying the following conditions:

• The string's length is .
• The first character must be a lowercase English alphabetic character.
• The second character must be a positive digit. Note that we consider zero to be neither positive nor negative.
• The third character must not be a lowercase English alphabetic character.
• The fourth character must not be an uppercase English alphabetic character.
• The fifth character must be an uppercase English alphabetic character.

In the editor below, replace the blank (_________) with a RegEx pattern satisfying the criteria above. This is a RegEx-only challenge, so you are not required to write any additional code.