/* package whatever; // don't place package name! */
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
 
public class Main {
    public static void main(String[] args) {
        String fileName = "24-168.txt";
        StringBuilder letterSequence = new StringBuilder();
        ArrayList<Integer> countList = new ArrayList<>();
 
        try (BufferedReader bufferedReader = new BufferedReader(new FileReader(fileName))) {
            String line = bufferedReader.readLine();
 
            // String s = "AABBAABBCCDDDEFFGF"; // Uncomment this line to test with a fixed string
 
            if (line != null && !line.isEmpty()) {
                letterSequence.append(line.charAt(0));
                countList.add(1);
 
                for (int i = 1; i < line.length(); i++) {
                    if (line.charAt(i) == line.charAt(i - 1)) {
                        countList.set(countList.size() - 1, countList.get(countList.size() - 1) + 1);
                    } else {
                        letterSequence.append(line.charAt(i));
                        countList.add(1);
                    }
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
 
        int maxLength = 0;
        for (int i = 2; i < letterSequence.length(); i++) {
            if (letterSequence.charAt(i - 2) < letterSequence.charAt(i - 1) && letterSequence.charAt(i - 1) < letterSequence.charAt(i)) {
                int length = countList.subList(i - 2, i + 1).stream().mapToInt(Integer::intValue).sum();
                maxLength = Math.max(length, maxLength);
            }
        }
 
        System.out.println(maxLength);
    }
}

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