H, W = map(int, input().split())
S = [[int(s == "#") for s in input()] for _ in range(H)]
M = int(input())
row = set()
col = set()
for _ in range(M):
    t, n = map(int, input().split())
    if t == 1:
        row.add(n)
    else:
        col.add(n)


def solve(flip=0):
    X = [[0] * W for _ in range(H)]
    for i in range(H):
        for j in range(W):
            target = flip
            if (i + j) % 2 == 0:
                target ^= 1
            X[i][j] = target ^ S[i][j]

    memo = set()
    for i in range(H):
        memo.add(tuple(X[i]))

    if len(memo) > 2:
        return False
    if len(memo) == 2:
        a = memo.pop()
        b = memo.pop()
        for i in range(W):
            if a[i] != b[i] ^ 1:
                return False
        for i in range(1, H):
            if X[i][0] != X[i-1][0]:
                if not i in row:
                    return False
    for i in range(1, W):
        if X[0][i] != X[0][i-1]:
            if not i in col:
                return False
    return True


if solve():
    print("Yes")
else:
    print("No")