import java.util.*;
import java.io.IOException;
import java.io.FileWriter;
import java.io.BufferedWriter;
import java.io.PrintWriter;

public class JavaKadai077 {

	public static void main(String[] args) {
		//createTestDataFile();
		Scanner stdin = new Scanner(System.in);
		int beforeData = 0, nowData = 0;
		float percent[][] = {{0,0,0,0}, {0,0,0,0}, {0,0,0,0}, {0,0,0,0}};

		beforeData = stdin.nextInt(); //最初のみ前のデータがないため、ループ外で代入
		for(int i = 1; i < 80; i++){
			nowData = stdin.nextInt();
			//nowData = randInt(4); //HACK: test data
			percent[beforeData][nowData]++; //全ての入力が終わった後に、全体で割る
			beforeData = nowData; //次の問題に移るため、今のデータを前のデータとする
		}

		String mark[] = {"ア","イ","ウ","エ"};
		for(int i = 0; i < 4; i++){
			for(int j = 0; j < 4; j++){
				percent[i][j] /= 79; //前と後ろの組み合わせは、(n個-1)通り
				System.out.printf("%s->%s:%4.1f%%\n", mark[i], mark[j], (percent[i][j]*100));
			}
		}

	}


	private static void createTestDataFile(){
		try{
			PrintWriter fileOut = new PrintWriter(new BufferedWriter(new FileWriter("077.txt")));
			for(int i = 0; i < 80; i++){
				fileOut.println(randInt(4));
			}
			fileOut.close();
		}catch(IOException e){
			System.out.println("ファイル出力エラーです");
		}
	}
	//over ride
	private static int randInt(int numRange){
		return randInt(numRange,0);
	}
	private static int randInt(int numRange,int numStart){
		return (int)(Math.random()*numRange)+numStart;
	}

}