// package atcoder.other2016.kupc2016;

import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.InputMismatchException;

public class Main {
    public static void main(String[] args) {
        InputReader in = new InputReader(System.in);
        PrintWriter out = new PrintWriter(System.out);

        int n = in.nextInt();

        char[][] board = new char[2][201];
        Arrays.fill(board[0], '~');
        Arrays.fill(board[1], '~');

        // make scaffold
        for (int p = 0 ; p < 4 ; p++) {
            fill(board, 100, p);
            if (query(board, 100, 101, in, out)) {
                break;
            }
        }
        if (n == 1) {
            in.nextToken();
            return;
        }

        // go right
        int len = 1;
        int right = 0;
        for (int x = 101 ; x <= 199 ; x++) {
            boolean found = false;
            for (int p = 0; p < 4 ; p++) {
                fill(board, x, p);
                if (query(board, 100, x+1, in, out)) {
                    right = x;
                    len++;
                    found = true;
                    break;
                }
            }
            if (!found) {
                break;
            }
            if (len == n) {
                in.nextToken();
                return;
            }
        }

        for (int x = 99 ; x >= 0 ; x--) {
            for (int p = 0; p < 4 ; p++) {
                fill(board, x, p);
                if (query(board, x, right+1, in, out)) {
                    len++;
                    break;
                }
            }
            if (len == n) {
                in.nextToken();
                return;
            }
        }
        out.flush();
    }

    static void fill(char[][] board, int x, int ptn) {
        board[0][x] = (ptn & 1) == 1 ? '#' : '.';
        board[1][x] = (ptn & 2) == 2 ? '#' : '.';
    }

    static boolean query(char[][] board, int f, int t, InputReader in, PrintWriter out) {
        out.println(String.valueOf(board[0]).substring(f, t));
        out.println(String.valueOf(board[1]).substring(f, t));
        out.flush();
        return in.nextToken().toCharArray()[0] == 'T';
    }

    static class InputReader {
        private InputStream stream;
        private byte[] buf = new byte[1024];
        private int curChar;
        private int numChars;

        public InputReader(InputStream stream) {
            this.stream = stream;
        }

        private int[] nextInts(int n) {
            int[] ret = new int[n];
            for (int i = 0; i < n; i++) {
                ret[i] = nextInt();
            }
            return ret;
        }


        private int[][] nextIntTable(int n, int m) {
            int[][] ret = new int[n][m];
            for (int i = 0; i < n; i++) {
                for (int j = 0; j < m; j++) {
                    ret[i][j] = nextInt();
                }
            }
            return ret;
        }

        private long[] nextLongs(int n) {
            long[] ret = new long[n];
            for (int i = 0; i < n; i++) {
                ret[i] = nextLong();
            }
            return ret;
        }

        private long[][] nextLongTable(int n, int m) {
            long[][] ret = new long[n][m];
            for (int i = 0; i < n; i++) {
                for (int j = 0; j < m; j++) {
                    ret[i][j] = nextLong();
                }
            }
            return ret;
        }

        private double[] nextDoubles(int n) {
            double[] ret = new double[n];
            for (int i = 0; i < n; i++) {
                ret[i] = nextDouble();
            }
            return ret;
        }

        private int next() {
            if (numChars == -1)
                throw new InputMismatchException();
            if (curChar >= numChars) {
                curChar = 0;
                try {
                    numChars = stream.read(buf);
                } catch (IOException e) {
                    throw new InputMismatchException();
                }
                if (numChars <= 0)
                    return -1;
            }
            return buf[curChar++];
        }

        public char nextChar() {
            int c = next();
            while (isSpaceChar(c))
                c = next();
            if ('a' <= c && c <= 'z') {
                return (char) c;
            }
            if ('A' <= c && c <= 'Z') {
                return (char) c;
            }
            throw new InputMismatchException();
        }

        public String nextToken() {
            int c = next();
            while (isSpaceChar(c))
                c = next();
            StringBuilder res = new StringBuilder();
            do {
                res.append((char) c);
                c = next();
            } while (!isSpaceChar(c));
            return res.toString();
        }

        public int nextInt() {
            int c = next();
            while (isSpaceChar(c))
                c = next();
            int sgn = 1;
            if (c == '-') {
                sgn = -1;
                c = next();
            }
            int res = 0;
            do {
                if (c < '0' || c > '9')
                    throw new InputMismatchException();
                res *= 10;
                res += c-'0';
                c = next();
            } while (!isSpaceChar(c));
            return res*sgn;
        }

        public long nextLong() {
            int c = next();
            while (isSpaceChar(c))
                c = next();
            long sgn = 1;
            if (c == '-') {
                sgn = -1;
                c = next();
            }
            long res = 0;
            do {
                if (c < '0' || c > '9')
                    throw new InputMismatchException();
                res *= 10;
                res += c-'0';
                c = next();
            } while (!isSpaceChar(c));
            return res*sgn;
        }

        public double nextDouble() {
            return Double.valueOf(nextToken());
        }

        public boolean isSpaceChar(int c) {
            return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
        }

        public interface SpaceCharFilter {
            public boolean isSpaceChar(int ch);
        }
    }

    static void debug(Object... o) {
        System.err.println(Arrays.deepToString(o));
    }
}


Measured memory_bytes: 9896