#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef __int128 lll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

inline int rd() {
    int x = 0;
    bool f = 0;
    char c = getchar();
    for (; !isdigit(c); c = getchar()) f |= (c == '-');
    for (; isdigit(c); c = getchar()) x = x * 10 + (c ^ 48);
    return f ? -x : x;
}

#define eb emplace_back
#define all(s) (s).begin(), (s).end()
#define rep(i, a, b) for (int i = (a); i <= (b); ++i)
#define per(i, a, b) for (int i = (a); i >= (b); --i)

inline void work() {
    int a = rd(), b = rd();
    while (a != b) {
        if (a < b) {putchar('L'); b -= a; swap(a, b);}
        else {putchar('R'); a -= b; swap(a, b);}
    }
    puts("");
}

int main() {
    per(t, rd(), 1) work();
    return 0;
}