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

public class Die {


    public static void main(String args[]) {
        String[] lines = new String[3];

        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

        try {
            for (int i = 0; i < 3; i++) {
                lines[i] = reader.readLine();
            }
            if ((lines[0].charAt(1) == ('o') && lines[0].charAt(0) == ':') || (lines[2].charAt(0) == ':' && lines[2].charAt(1) == 'o'))  {
                    System.out.println("unknown");
            }
            else if (lines[0].equals("o:o")) {
                if (lines[2].equals(lines[0])) {
                    if (lines[1].equals(":::")) {
                        System.out.println("4");
                    }
                    else if (lines[1].equals(":o:")) {
                        System.out.println("5");
                    }
                    else if (lines[1].equals("o:o")) {
                        System.out.println("6");
                    }
                    else {
                        System.out.println("unknown");
                    }
                }

                else {
                    System.out.println("unknown");
                }
            }
            else if (lines[0].equals("o::") || lines[0].equals("::o")) {
                if (lines[2].equals(lines[0])) {
                    System.out.println("unknown");
                }
                else if (lines[1].equals(":o:")) {
                    if(lines[2].equals("o::") || lines[2].equals("::o")) {
                        System.out.println("3");
                    }
                    else {
                        System.out.println("unknown");
                    }
                }
                else if (lines[1].equals(":::") ){
                    if(lines[2].equals("o::") || lines[2].equals("::o")) {
                        System.out.println("2");
                    }
                    else {
                        System.out.println("unknown");
                    }
                }
                else {
                    System.out.println("unknown");
                }
            }

            else if (lines[0].equals("ooo") && lines[1].equals(":::") && lines[2].equals("ooo")) {
                System.out.println("6");
            }
            else if (lines[0].equals(":::") && lines[1].equals(":o:") && lines[2].equals(":::")) {
                System.out.println("1");
            }
            else {
                System.out.println("unknown");
            }




        }
        catch (IOException ex){
            System.out.println("Input not found");
        }

    }

}