Problem: You have a simple and connected undirected graph consisting of n nodes and m edges.

Consider any way to pair some subset of these n nodes such that no node is present in more than one pair. 

This pairing is valid if for every pair of pairs, the induced subgraph containing all 4 nodes, two from each pair, has at most 2 edges (out of the 6 possible edges). More formally, for any two pairs, (a,b) and (c,d), the induced subgraph with nodes \\{a,b,c,d\} should have at most 2 edges. 

Please note that the subgraph induced by a set of nodes contains nodes only from this set and edges which have both of its end points in this set.

Now, do one of the following: 

  * Find a simple path consisting of at least ⌈ n/2 ⌉ nodes. Here, a path is called simple if it does not visit any node multiple times. 
  * Find a valid pairing in which at least ⌈ n/2 ⌉ nodes are paired. 



It can be shown that it is possible to find at least one of the two in every graph satisfying constraints from the statement. 

Input

Each test contains multiple test cases. The first line contains the number of test cases t (1 ≤ t ≤ 10^5). Description of the test cases follows.

The first line of each test case contains 2 integers n, m (2 ≤ n ≤ 5⋅ 10^5, 1 ≤ m ≤ 10^6), denoting the number of nodes and edges, respectively. 

The next m lines each contain 2 integers u and v (1 ≤ u, v ≤ n, u ≠ v), denoting that there is an undirected edge between nodes u and v in the given graph.

It is guaranteed that the given graph is connected, and simple — it does not contain multiple edges between the same pair of nodes, nor does it have any self-loops. 

It is guaranteed that the sum of n over all test cases does not exceed 5⋅ 10^5.

It is guaranteed that the sum of m over all test cases does not exceed 10^6.

Output

For each test case, the output format is as follows. 

If you have found a pairing, in the first line output "PAIRING" (without quotes). 

  * Then, output k (⌈ n/2 ⌉ ≤ 2⋅ k ≤ n), the number of pairs in your pairing. 
  * Then, in each of the next k lines, output 2 integers a and b — denoting that a and b are paired with each other. Note that the graph does not have to have an edge between a and b!
  * This pairing has to be valid, and every node has to be a part of at most 1 pair. 



Otherwise, in the first line output "PATH" (without quotes). 

  * Then, output k (⌈ n/2 ⌉ ≤ k ≤ n), the number of nodes in your path. 
  * Then, in the second line, output k integers, v_1, v_2, …, v_k, in the order in which they appear on the path. Formally, v_i and v_{i+1} should have an edge between them for every i (1 ≤ i < k).
  * This path has to be simple, meaning no node should appear more than once. 

Example

Input


4
6 5
1 4
2 5
3 6
1 5
3 5
6 5
1 4
2 5
3 6
1 5
3 5
12 14
1 2
2 3
3 4
4 1
1 5
1 12
2 6
2 7
3 8
3 9
4 10
4 11
2 4
1 3
12 14
1 2
2 3
3 4
4 1
1 5
1 12
2 6
2 7
3 8
3 9
4 10
4 11
2 4
1 3


Output


PATH
4 
1 5 3 6
PAIRING
2
1 6
2 4
PAIRING
3
1 8
2 5
4 10
PAIRING
4
1 7
2 9
3 11
4 5

Note

The path outputted in the first case is the following. 

<image>

The pairing outputted in the second case is the following. 

<image>

Here is an invalid pairing for the same graph — the subgraph \{1,3,4,5\} has 3 edges. 

<image>

Here is the pairing outputted in the third case. 

<image>

It's valid because — 

  * The subgraph \{1,8,2,5\} has edges (1,2) and (1,5). 
  * The subgraph \{1,8,4,10\} has edges (1,4) and (4,10). 
  * The subgraph \{4,10,2,5\} has edges (2,4) and (4,10). 



Here is the pairing outputted in the fourth case. 

<image>

Solution (in JAVA):

Solution:
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.Collection;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;
import java.io.BufferedReader;
import java.util.Queue;
import java.util.ArrayDeque;
import java.util.function.IntSupplier;
import java.io.InputStream;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        EPairsOfPairs solver = new EPairsOfPairs();
        solver.solve(1, in, out);
        out.close();
    }

    static class EPairsOfPairs {
        public void solve(int testNumber, InputReader in, PrintWriter out) {
            int t = in.nextInt();
            for (int i = 0; i < t; i++) {
                solve(in, out);
            }
        }

        private void solve(InputReader in, PrintWriter out) {
            int n = in.nextInt(), m = in.nextInt();
            final int target = (n + 1) / 2;
            List<Integer>[] adj = GraphIO.readUndirectedAdjacencyList(in, n, m);

            EPairsOfPairs.DFSTree tree = new EPairsOfPairs.DFSTree(adj, 0);

            for (int i = 0; i < n; i++) {
                if (tree.depth[i] + 1 >= target) {
                    out.println("PATH");
                    out.println(target);
                    for (int j = 0; j < target; j++) {
                        out.print((i + 1) + " ");
                        i = tree.parent[i];
                    }
                    out.println();
                    return;
                }
            }

            int[] degree = new int[n];
            Queue<Integer> leaves = new ArrayDeque<>();
            for (int i = 0; i < n; i++) {
                degree[i] = tree.children[i].size();
                if (degree[i] == 0)
                    leaves.add(i);
            }

            IntSupplier remove = () -> {
                int c = leaves.poll();
                int p = tree.parent[c];
                if (p != c && --degree[p] == 0) {
                    leaves.add(p);
                }
                return c;
            };

            IntStack paired = new IntStack();
            while (!leaves.isEmpty()) {
                if (leaves.size() <= 1)
                    break;

                paired.push(remove.getAsInt());
                paired.push(remove.getAsInt());

                if (paired.size() >= target)
                    break;
            }

            out.println("PAIRING");
            out.println(paired.size() / 2);
            for (int i = 0; i < paired.size(); i += 2) {
                out.println(Util.join(paired.get(i) + 1, paired.get(i + 1) + 1));
            }
        }

        private static class DFSTree {
            public final int n;
            public final int root;
            public final int[] parent;
            public final int[] depth;
            public final List<Integer>[] children;
            public final List<Integer>[] adj;

            public DFSTree(List<Integer>[] adj, int root) {
                n = adj.length;
                this.adj = adj;
                this.root = root;
                parent = new int[n];
                Arrays.fill(parent, -1);
                depth = new int[n];
                children = Util.arrayOfLists(n);

                parent[root] = root;
                dfs(root);
            }

            private void dfs(int cur) {
                for (int next : adj[cur]) {
                    if (parent[next] != -1)
                        continue;

                    parent[next] = cur;
                    depth[next] = depth[cur] + 1;
                    children[cur].add(next);
                    dfs(next);
                }
            }

        }

    }

    static class IntStack {
        int[] array;
        int size = 0;

        public IntStack() {
            this(8);
        }

        public IntStack(int capacity) {
            array = new int[capacity];
        }

        public void push(int item) {
            if (size >= array.length)
                array = resize(array);
            array[size++] = item;
        }

        public int size() {
            return size;
        }

        public int get(int i) {
            Util.ASSERT(i < size);
            return array[i];
        }

        private static int[] resize(int[] array) {
            int[] newArray = new int[array.length << 1];
            System.arraycopy(array, 0, newArray, 0, array.length);
            return newArray;
        }

        public String toString() {
            int[] trimmed = new int[size];
            System.arraycopy(array, 0, trimmed, 0, size);
            return Arrays.toString(trimmed);
        }

    }

    static class InputReader {
        public final BufferedReader reader;
        public StringTokenizer tokenizer;

        public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        }

        public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

        public int nextInt() {
            return Integer.parseInt(next());
        }

    }

    static class GraphIO {
        public static List<Integer>[] readUndirectedAdjacencyList(InputReader in, int n, int m) {
            List<Integer>[] adj = new List[n];
            for (int i = 0; i < n; i++) {
                adj[i] = new ArrayList<>();
            }
            for (int i = 0; i < m; i++) {
                int u = in.nextInt() - 1;
                int v = in.nextInt() - 1;
                adj[u].add(v);
                adj[v].add(u);
            }
            return adj;
        }

        private GraphIO() {
        }

    }

    static class Util {
        public static String join(int... i) {
            StringBuilder sb = new StringBuilder();
            for (int o : i) {
                sb.append(o);
                sb.append(" ");
            }
            if (sb.length() > 0) {
                sb.deleteCharAt(sb.length() - 1);
            }
            return sb.toString();
        }

        public static void ASSERT(boolean assertion) {
            if (!assertion)
                throw new AssertionError();
        }

        private Util() {
        }

        public static <T> List<T>[] arrayOfLists(int n) {
            List<T>[] array = new List[n];
            for (int i = 0; i < n; i++) {
                array[i] = new ArrayList<>(0);
            }
            return array;
        }

    }
}