from collections import deque
h,w,k,l,r = map(int,input().split())
s = [input()+"#" for _ in range(h)]+["#"*(w+1)]
if l%2==r%2: exit(print("No"))
def f(x,y):
    d = [[10**9]*(w+1) for _ in range(h+1)]
    c = [[[0,0] for _ in range(w+1)] for _ in range(h+1)]
    d[x][y] = 0; dq = deque([(x,y)])
    while dq:
        px,py = dq.popleft()
        for dx,dy in ((-1,0),(0,-1),(0,1),(1,0)):
            nx,ny = px+dx,py+dy
            if s[nx][ny]=="." and d[nx][ny]==10**9:
                d[nx][ny] = d[px][py]+1
                c[nx][ny] = [dx,dy]
                dq.append((nx,ny))
    return d,c
def g(x,y):
    t1 = []; px,py = x,y
    while (px,py)!=(0,0):
        dx,dy = c1[px][py]
        if (dx,dy)==(-1,0): t1.append("U")
        if (dx,dy)==(0,-1): t1.append("L")
        if (dx,dy)==(0,1): t1.append("R")
        if (dx,dy)==(1,0): t1.append("D")
        px -= dx; py -= dy
    t2 = []; px,py = x,y
    while (px,py)!=(h-1,w-1):
        dx,dy = c2[px][py]
        if (dx,dy)==(-1,0): t2.append("D")
        if (dx,dy)==(0,-1): t2.append("R")
        if (dx,dy)==(0,1): t2.append("L")
        if (dx,dy)==(1,0): t2.append("U")
        px -= dx; py -= dy
    return "".join(t1[::-1]),"".join(t2)
d1,c1 = f(0,0); d2,c2 = f(h-1,w-1)
for i in range(h):
    for j in range(w):
        if d1[i][j]>l-1 or d1[i][j]%2!=(l-1)%2 or\
            d2[i][j]>k-r or d2[i][j]%2!=(k-r)%2 or\
            s[i][j]=="#": continue
        if s[i-1][j]==s[i+1][j]==".":
            t1,t2 = g(i,j)
            print("Yes")
            print(t1+"UD"*((k-len(t1)-len(t2))//2)+t2)
            exit()
        if s[i][j-1]==s[i][j+1]==".":
            t1,t2 = g(i,j)
            print("Yes")
            print(t1+"LR"*((k-len(t1)-len(t2))//2)+t2)
            exit()
print("No")