M

SELECT * FROM yacs_categories AS categories WHERE categories.keywords RLIKE '[[:<:]]X[[:>:]]' LIMIT 1
3685: Illegal argument to a regular expression.

SELECT * FROM yacs_categories AS categories WHERE categories.keywords RLIKE '[[:<:]]H[[:>:]]' LIMIT 1
3685: Illegal argument to a regular expression.

SELECT * FROM yacs_categories AS categories WHERE categories.keywords RLIKE '[[:<:]]T[[:>:]]' LIMIT 1
3685: Illegal argument to a regular expression.

SELECT * FROM yacs_categories AS categories WHERE categories.keywords RLIKE '[[:<:]]M[[:>:]]' LIMIT 1
3685: Illegal argument to a regular expression.

SELECT * FROM yacs_categories AS categories WHERE categories.keywords RLIKE '[[:<:]]L[[:>:]]' LIMIT 1
3685: Illegal argument to a regular expression.