\ban ASCII word boundary
Negative Lookahead(?!nip \d{10}\b) nip the literal text nip (case sensitive) \d{10}a digit, repeated exactly 10 times
\ban ASCII word boundary
\S+any non-whitespace character, repeated at least once
\s*any whitespace character, repeated any number of times
\d{10}a digit, repeated exactly 10 times
\ban ASCII word boundary
g modifier: global. Finds all matches instead of stopping after the first
m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string