['qqq-xq' => '(?:[r-w]|q[r-z]|qq[q-z]|x(?![q-z])|xq)'],
[ 'qq-xqq' => '(?:[r-w]|q[q-z]|' . 'x(?![q-z])|xq(?![q-z])|xqq)'],
[ 'q-xxx' => '(?:[q-w]|x(?![x-z])|xx(?![x-z])|xxx)'],
['qqq-x' => '(?:[r-x]|q[r-z]|qq[q-z])'],
['qaa-qb' => '(?:qa[a-z]|qb)'],
['qqq-xq' => '(?:[r-w]|q[r-z]|qq[q-z]|x(?![q-z])|xq)'],
[ 'qq-xqq' => '(?:[r-w]|q[q-z]|' . 'x(?![q-z])|xq(?![q-z])|xqq)'],
[ 'q-xxx' => '(?:[q-w]|x(?![x-z])|xx(?![x-z])|xxx)'],
['qqq-x' => '(?:[r-x]|q[r-z]|qq[q-z])'],
['qaa-qb' => '(?:qa[a-z]|qb)'],