sx,sy,tx,ty = map(int,input().split())
R=[]

R+=["R"]*(tx-sx)
R+=["U"]*(ty-sy)
R+=["L"]*(tx-sx)
R+=["D"]*(ty-sy+1)
R+=["R"]*(tx-sx+1)
R+=["U"]*(ty-sy+1)
R+=["L"]
R+=["U"]
R+=["L"]*(tx-sx+1)
R+=["D"]*(ty-sy+1)
R+=["R"]


print("".join(R))




6bab15f7bae416d7e75663ceb12f3e872c6d6c58
<mask token>

<mask token>
R += ['R'] * (tx - sx)
R += ['U'] * (ty - sy)
R += ['L'] * (tx - sx)
R += ['D'] * (ty - sy + 1)
R += ['R'] * (tx - sx + 1)
R += ['U'] * (ty - sy + 1)
R += ['L']
R += ['U']
R += ['L'] * (tx - sx + 1)
R += ['D'] * (ty - sy + 1)
R += ['R']
print(''.join(R))

sx, sy, tx, ty = map(int, input().split())
R = []
R += ['R'] * (tx - sx)
R += ['U'] * (ty - sy)
R += ['L'] * (tx - sx)
R += ['D'] * (ty - sy + 1)
R += ['R'] * (tx - sx + 1)
R += ['U'] * (ty - sy + 1)
R += ['L']
R += ['U']
R += ['L'] * (tx - sx + 1)
R += ['D'] * (ty - sy + 1)
R += ['R']
print(''.join(R))

sx,sy,tx,ty = map(int,input().split())
R=[]

R+=["R"]*(tx-sx)
R+=["U"]*(ty-sy)
R+=["L"]*(tx-sx)
R+=["D"]*(ty-sy+1)
R+=["R"]*(tx-sx+1)
R+=["U"]*(ty-sy+1)
R+=["L"]
R+=["U"]
R+=["L"]*(tx-sx+1)
R+=["D"]*(ty-sy+1)
R+=["R"]


print("".join(R))



