Matched using (x\d{3,}?): x123
Matched using (x\d{3,}?): x123
Matched using (x\d{3,}?x): x123456x
Matched using (x\d{3,}?x): x123x
Matched using (x\d{3,}): x123456
Matched using (x\d{3,}): x123
Matched using (x\d{3}): x123
Matched using (x\d{3}): x123