import java.util.regex.*;
class Main
{
public static void main
(String[] args
) {
Pattern pattern = Pattern.compile("[a-z][0-9]{2}");
Matcher matcher = pattern.matcher("sedfdhajkldsfakdsakvsdfasdfr30.reed.op.1xp0");
if(matcher.find()) {
System.
out.
println(matcher.
group()); }
}
}
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