import sys
input = sys.stdin.readline

H, W = map(int, input().split())
S = [list(input()[:-1]) for _ in range(H)]

for i in range(H):
    for j in range(W):
        if (i+j)%2==1:
            if S[i][j]=='.':
                S[i][j] = '#'
            else:
                S[i][j] = '.'

M = int(input())
hs, ws = set(), set()

for _ in range(M):
    t, n = map(int, input().split())
    
    if t==1:
        hs.add(n-1)
    else:
        ws.add(n-1)

for i in range(H-1):
    for j in range(W):
        if S[i][0]!=S[i+1][0] and S[i][j]==S[i+1][j]:
            exit(print('No'))
        
        if S[i][0]==S[i+1][0] and S[i][j]!=S[i+1][j]:
            exit(print('No'))
    
    if S[i][0]!=S[i+1][0] and i not in hs:
        exit(print('No'))

for i in range(W-1):
    for j in range(H):
        if S[0][i]!=S[0][i+1] and S[j][i]==S[j][i+1]:
            exit(print('No'))
        
        if S[0][i]==S[0][i+1] and S[j][i]!=S[j][i+1]:
            exit(print('No'))
    
    if S[0][i]!=S[0][i+1] and i not in ws:
        exit(print('No'))

print('Yes')