import math
u = 0
count = 0
N,K = input().split()
N = int(N)
K = int(K)


S = [input() for i in range(N)]
T = [input() for i in range(N)]

if K == 1:
    print("Yes")
else:
    MAX = math.floor(N / K)
    for i in range(0,N):

        
        for j in range(0,MAX+1):
            if i+(j*K) >= N:
                break
            if S[i] == T[i + (j * K)]:
                u = 1
                
        for j in range(0,MAX+1):
            if i-(j*K) <= -1:
                break
            if S[i] == T[i-(j*K)]:
                u = 1


        if u == 1:
            u = 0
            count += 1
        else:
            print("No")
            break

if count == N:
    print("Yes")