import sys

# sys.setrecursionlimit(200005)
# sys.set_int_max_str_digits(1000005)
int1 = lambda x: int(x)-1
pDB = lambda *x: print(*x, end="\n", file=sys.stderr)
p2D = lambda x: print(*x, sep="\n", end="\n\n", file=sys.stderr)
def II(): return int(sys.stdin.readline())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]
def LI1(): return list(map(int1, sys.stdin.readline().split()))
def LLI1(rows_number): return [LI1() for _ in range(rows_number)]
def SI(): return sys.stdin.readline().rstrip()

dij = [(0, 1), (-1, 0), (0, -1), (1, 0)]
# dij = [(0, 1), (-1, 0), (0, -1), (1, 0), (1, 1), (1, -1), (-1, 1), (-1, -1)]
inf = -1-(-1 << 63)
# md = 10**9+7
md = 998244353

from collections import deque

def bfs(si, sj):
    dp = [[inf]*w for _ in range(h)]
    q = deque()
    q.append((si, sj))
    dp[si][sj] = 0
    while q:
        i, j = q.popleft()
        d = dp[i][j]
        for di, dj in dij:
            ni, nj = i+di, j+dj
            if ni < 0 or nj < 0 or ni >= h or nj >= w: continue
            if ss[ni][nj]: continue
            if dp[ni][nj] != inf: continue
            dp[ni][nj] = d+1
            q.append((ni, nj))
    return dp

def find_mij():
    for i in range(h):
        for j in range(w):
            if ss[i][j]: continue
            if dd[i][j] & 1 != l & 1: continue
            if dd[i][j] > l: continue
            if rdd[i][j] & 1 != k-r & 1: continue
            if rdd[i][j] > k-r: continue
            if i and i+1 < h and ss[i-1][j] == ss[i+1][j] == 0: return i, j, 0
            if j and j+1 < w and ss[i][j-1] == ss[i][j+1] == 0: return i, j, 1
    return -1, -1, -1

h, w, k, l, r = LI()
l -= 1
ss = [[c == "#" for c in SI()] for _ in range(h)]

if (r-l) & 1:
    print("No")
    exit()

dd = bfs(0, 0)
rdd = bfs(h-1, w-1)
# p2D(dd)
# p2D(rdd)

mi, mj, dir = find_mij()
# pDB(mi,mj,dir)

if mi == -1:
    print("No")
    exit()

ans = []
i, j = mi, mj
t = "LDRU"
while (i, j) != (0, 0):
    for p, (di, dj) in enumerate(dij):
        ni, nj = i+di, j+dj
        if ni < 0 or nj < 0 or ni >= h or nj >= w: continue
        if dd[ni][nj] == dd[i][j]-1:
            ans.append(t[p])
            i, j = ni, nj
            break

ans.reverse()
t = "LR" if dir else "UD"
ans += [t]*((k-rdd[mi][mj]-dd[mi][mj])//2)

i, j = mi, mj
t = "RULD"
while (i, j) != (h-1, w-1):
    for p, (di, dj) in enumerate(dij):
        ni, nj = i+di, j+dj
        if ni < 0 or nj < 0 or ni >= h or nj >= w: continue
        if rdd[ni][nj] == rdd[i][j]-1:
            ans.append(t[p])
            i, j = ni, nj
            break

print("Yes")
print(*ans,sep="")