import java.util.*;
import java.lang.*;
import java.io.*;
class Ideone
{
{
String pattern
= "(?m)^[^A-Z\\r\\n]*[A-Z][^A-Z\\r\\n]*([A-Z])"; String string
= "98A02D1\n98A02"; System.
out.
println(string.
replaceAll(pattern,
"$1")); }
}
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