Non-Alphanumeric Removal

Description

Removes all non-alphanumeric characters.

Recall that alphanumerics are letters and numbers. This operation may split a token into multiple tokens, e.g. stop!minyak becomes stop and minyak.

Example

Sample input:

Saya tidur... kemarin
TOLONG DIBENAHI!!! kapan beresnya??!?

Sample output:

saya tidur kemarin
TOLONG DIBENAHI kapan beresnya