A=[]
MX=[]
for _ in range(8):
    a=list(map(int,list(input())))
    A.append(a)
    MX.append(max(a))
def can_subtract(a,b):
    ok=1
    for ai,bi in zip(a,b):
        if ai<bi:ok=0;break
    return ok
def subtract(a,b):
    for i in range(8):
        a[i]-=b[i]
    return a
def dfs(A1:list,i):
    if i==8:
        if sum(A1)==0:exit(print("Yes"))
        return
    if max(A1)<max(A[i]):
        return
    for _ in range(8):
        if can_subtract(A1,A[i]):
            dfs(subtract(A1[:],A[i]),i+1)
        A[i]=A[i][1:]+[A[i][0]]
    pass
rest=set([i for i in range(1,8)])
dfs(A[0][:],1)
print("No")