/*
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 */
package die;

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

/**
 *
 * @author cteam063
 */
public class Die {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws IOException {
        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
        String row1 = in.readLine();
        String row2 = in.readLine();
        String row3 = in.readLine();
       
        
        if ((row1.equals(":::")) && (row2.equals(":o:")) && (row3.equals(":::"))) System.out.println("1");
        else if ((row1.equals("o::")) && (row2.equals(":::")) && (row3.equals("::o"))) System.out.println("2");
        else if ((row1.equals("o::")) && (row2.equals(":o:")) && (row3.equals("::o"))) System.out.println("3");
        else if ((row1.equals("::o")) && (row2.equals(":::")) && (row3.equals("o::"))) System.out.println("2");
        else if ((row1.equals("::o")) && (row2.equals(":o:")) && (row3.equals("o::"))) System.out.println("3");
        else if ((row1.equals("o:o")) && (row2.equals(":::")) && (row3.equals("o:o"))) System.out.println("4");
        else if ((row1.equals("o:o")) && (row2.equals(":o:")) && (row3.equals("o:o"))) System.out.println("5");
        else if ((row1.equals("ooo")) && (row2.equals(":::")) && (row3.equals("ooo"))) System.out.println("6");
        else if ((row1.equals("o:o")) && (row2.equals("o:o")) && (row3.equals("o:o"))) System.out.println("6");
        else System.out.println("unknown");
    }
    
}