The ^ symbol matches the position at the start of a string.

The $ symbol matches the position at the end of a string.

Task

You have a test string . Your task is to match the pattern
Here, denotes a word character, and denotes a digit.
must start with a digit and end with . symbol.
should be characters long only.

Note

This is a regex only challenge. You are not required to write code.
You have to fill the regex pattern in the blank (_________).