// your code goes here
//let regex = /(\w+(,|\s)*)+;/;
let regex = /(\w+(,|\s)+)+(\w+);/;
let text = "XXXX,XXXX,XXX,XXX,XXXX,XXX,XXXX,XXX,XXX,XXX,XXXX, XXXXX";
let matched = text.match(regex);
if (matched != null) {
print(matched[0]);
} else {
print(null);
}
text = "XXXX,XXXX,XXX,XXX,XXXX,XXX,XXXX,XXX,XXX,XXX,XXXX, XXXXX;";
matched = text.match(regex);
if (matched != null) {
print(matched[0]);
} else {
print(null);
}
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
null
XXXX,XXXX,XXX,XXX,XXXX,XXX,XXXX,XXX,XXX,XXX,XXXX, XXXXX;