The fourth bird questions

The fourth bird answers

• Regex: Does not contain sub string [duplicate]
• Regex matching groups of contacts
• How to extract from string with regex, a word and or condition
• Capture a keypair split & neighbored by fixed values
• Use regex to find and replace every second backtick in a string
• Regex to find specific letter before a condition Python
• Php preg_match_all matches only last element
• Regex to find the exact money in NodeJs from Statement
• Extract substring from dot untill colon with Python regex
• Regular expression: Match a string that contains no more than three consecutive Bs (without using negative lookahead)