alphanumeric characters in a sentence

Examples

1. :The best passwords involve alphanumeric characters and numbers along with capital and lower-case letters.
2. Each " deck " of cards could contain up to 5.5 MB of alphanumeric characters.
3. Classes and IDs are case-sensitive, start with letters, and can include alphanumeric characters and underscores.
4. The following list is largely limited to non-alphanumeric characters.
5. Does Cluebot pick up instantly on every accidental mistyping of non-alphanumeric characters as potential vandalism?
6. USSD messages are up to 182 alphanumeric characters long.
7. Normally searches ignore non-alphanumeric characters, but regular expressions ( regex ) accept all characters, plus metacharacters.
8. The BBAN must be of a fixed length for the country and comprise case-insensitive alphanumeric characters.
9. Traditionally, filenames allowed only alphanumeric characters, but as time progressed, the number of characters allowed increased.
10. When a section heading contains non-alphanumeric characters, then the corresponding anchor contains this characters somehow encoded.