UVA - 620 - Cellular Structure

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {

    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuffer sb = new StringBuffer();
        int cases = Integer.parseInt(br.readLine());
        for (int i = 0; i < cases; i++) {
            StringBuilder str = new StringBuilder(br.readLine());
            check(str, sb);
        }
        System.out.print(sb);
    }
   
    static void check(StringBuilder str,StringBuffer sb){
        if (str.length() > 2) {
            if (str.charAt(0) == 'A') {
                if(str.charAt(str.length()-2)=='A' &&
                        str.charAt(str.length()-1)=='B'){
                    if(checkNotMutant(new StringBuilder(str.substring(0, str.length()-2)))){
                        sb.append("FULLY-GROWN\n");
                    }else{
                        sb.append("MUTANT\n");
                    }
                }else{
                    sb.append("MUTANT\n");
                }
            }else{
                if(str.charAt(str.length()-2)=='A' &&
                        str.charAt(str.length()-1)=='B'){
                    if(checkNotMutant(new StringBuilder(str.substring(0, str.length()-2)))){
                        sb.append("FULLY-GROWN\n");
                    }else{
                        sb.append("MUTANT\n");
                    }
                }else if(str.charAt(str.length()-1)=='A'){
                   if(checkNotMutant(new StringBuilder(str.substring(1, str.length()-1)))){
                        sb.append("MUTAGENIC\n");
                    }else{
                        sb.append("MUTANT\n");
                    }
                }else{
                    sb.append("MUTANT\n");
                }
            }
        }else{
            if (str.charAt(0) == 'A') {
                if (str.length() == 1) {
                    sb.append("SIMPLE\n");
                } else {
                    if (str.charAt(1) == 'B') {
                       sb.append("FULLY-GROWN\n");
                    } else {
                        sb.append("MUTANT\n");
                    }
                }
            }else{
                sb.append("MUTANT\n");
            }
        }
    }
    static boolean checkNotMutant(StringBuilder str) {
        if (str.length() > 2) {
            if (str.charAt(0) == 'A') {
                if(str.charAt(str.length()-2)=='A' &&
                        str.charAt(str.length()-1)=='B'){
                    return true&&checkNotMutant(new StringBuilder(str.substring(0, str.length()-2)));
                }else{
                    return false;
                }
            }else{
                if(str.charAt(str.length()-2)=='A' &&
                        str.charAt(str.length()-1)=='B'){
                    return true&&checkNotMutant(new StringBuilder(str.substring(0, str.length()-2)));
                }else if(str.charAt(str.length()-1)=='A'){
                    return true&&checkNotMutant(new StringBuilder(str.substring(1, str.length()-1)));
                }else{
                    return false;
                }
            }
        }else{
            if (str.charAt(0) == 'A') {
                if (str.length() == 1) {
                    return true;
                } else {
                    if (str.charAt(1) == 'B') {
                        return false;
                    } else {
                        return false;
                    }
                }
            }else{
                return false;
            }
        }
    }
}