def main():

    sx, sy, tx, ty = list(map(int, input().split()))

    x = tx - sx

    y = ty - sy

    s = ""

    for i in range(2):

        tmp = ""

        if i:

            tmp += "D"

            tmp += "R"*(x+1)

            tmp += "U"*(y+1)

            tmp += "L"



        else:

            tmp += "R"*x

            tmp += "U"*y

        s += tmp + tmp.translate(str.maketrans({"U": "D",

                                                "D": "U", "L": "R", "R": "L"}))

    print(s)





if __name__ == "__main__":

    main()

def main():

    sx, sy, tx, ty = list(map(int, input().split()))

    x = tx - sx

    y = ty - sy

    s = ""

    s += "R"*x

    s += "U"*y

    s += s.translate(str.maketrans({"U": "D",

                                    "D": "U", "L": "R", "R": "L"}))

    tmp = ""

    tmp += "D"

    tmp += "R"*(x+1)

    tmp += "U"*(y+1)

    tmp += "L"

    s += tmp + tmp.translate(str.maketrans({"U": "D",

                                            "D": "U", "L": "R", "R": "L"}))

    print(s)





if __name__ == "__main__":

    main()

def main():
    sx, sy, tx, ty = list(map(int, input().split()))
    x = tx - sx
    y = ty - sy
    s = ""
    for i in range(2):
        tmp = ""
        if i:
            tmp += "D"
            tmp += "R" * (x + 1)
            tmp += "U" * (y + 1)
            tmp += "L"
        else:
            tmp += "R" * x
            tmp += "U" * y
        s += tmp + tmp.translate(
            str.maketrans({"U": "D", "D": "U", "L": "R", "R": "L"})
        )
    print(s)


if __name__ == "__main__":
    main()

def main():
    sx, sy, tx, ty = list(map(int, input().split()))
    x = tx - sx
    y = ty - sy
    s = ""
    s += "R" * x
    s += "U" * y
    s += s.translate(str.maketrans({"U": "D", "D": "U", "L": "R", "R": "L"}))
    tmp = ""
    tmp += "D"
    tmp += "R" * (x + 1)
    tmp += "U" * (y + 1)
    tmp += "L"
    s += tmp + tmp.translate(str.maketrans({"U": "D", "D": "U", "L": "R", "R": "L"}))
    print(s)


if __name__ == "__main__":
    main()

-    for i in range(2): -        tmp = "" -        if i: -            tmp += "D" -            tmp += "R" * (x + 1) -            tmp += "U" * (y + 1) -            tmp += "L" -        else: -            tmp += "R" * x -            tmp += "U" * y -        s += tmp + tmp.translate( -            str.maketrans({"U": "D", "D": "U", "L": "R", "R": "L"}) -        ) +    s += "R" * x +    s += "U" * y +    s += s.translate(str.maketrans({"U": "D", "D": "U", "L": "R", "R": "L"})) +    tmp = "" +    tmp += "D" +    tmp += "R" * (x + 1) +    tmp += "U" * (y + 1) +    tmp += "L" +    s += tmp + tmp.translate(str.maketrans({"U": "D", "D": "U", "L": "R", "R": "L"}))