h,w,k,l,r=map(int,input().split())
X=[]
for i in range(h):
	s=input()
	S=[str(c) for c in s]
	X.append(S)
if r==k or (r+l)%2==0 or k%2!=0:
	print("No")
	exit()
X[0][0]=0
ex=[[0,0]]
point=0
while point!=len(ex):
    II=ex[point]
    now=X[II[0]][II[1]]
    for I in [[1,0],[-1,0],[0,1],[0,-1]]:
        if 0<=II[0]+I[0]<h and 0<=II[1]+I[1]<w:
            if X[II[0]+I[0]][II[1]+I[1]]==".":
                X[II[0]+I[0]][II[1]+I[1]]=now+1
                ex.append([II[0]+I[0],II[1]+I[1]])
    point+=1
if X[-1][-1]>k-r+l-1:
    print("No")
    exit()
ans=""
#print(X)
II=[h-1,w-1]
point=X[-1][-1]
VM=["","L","","U","D","","R"]
for i in reversed(range(point)):
    for I in [[1,0],[-1,0],[0,1],[0,-1]]:
        if 0<=II[0]+I[0]<h and 0<=II[1]+I[1]<w:
            if X[II[0]+I[0]][II[1]+I[1]]==i:
                II=[II[0]+I[0],II[1]+I[1]]
                key=I[0]+3*I[1]
                #print(key,I)
                ans=ans+VM[key]
                break

print("Yes")
print(ans[:l],end="")
print((ans[l]+VM[-VM.index(ans[l])])*((k-len(ans))//2),end="")
print(ans[l:])