toI(s=readline()) = parse(Int,s)
toVI(s=readline()) = parse.(Int,split(s))
rep(f,n) = [f() for _ in 1:n]
@enum YN Yes=1 No=0

function main()
    a = Vector{Vector{Int}}(undef,8)
    for i in 1:8
        a[i] = map(toI,collect(readline()))
    end
    solve(a) |> YN |> println
end

function solve(a)
    b = zeros(Int,8)
    for i in 0:8^7-1
        for j in 1:8
            b[j] = -a[1][j]
        end
        for k in 2:8
            shift = (i >> 3(k-2)) & 7
            for j in 1:8
                j′ = mod1(j+shift,8)
                b[j] += a[k][j′]
            end
        end
        all(iszero,b) && return true
    end
    return false
end

@static if endswith(@__FILE__, PROGRAM_FILE)
    main()
end