Examples of valid patterns
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/<\/\w+>/
Examples
Examples of valid patterns
/<\/\w+>/|(\d{3})-\d+|Sm/^(?i)php[34]/{^\s+(\s+)?$}
Examples of invalid patterns
/href='(.*)'- missing ending delimiter/\w+\s*\w+/J- unknown modifier 'J'1-\d3-\d3-\d4|- missing starting delimiter