import sys
input = sys.stdin.readline

from collections import Counter

H,W=map(int,input().split())
S=[input().strip() for i in range(H)]

A=[[0]*W for i in range(H)]

for i in range(H):
    for j in range(W):
        if S[i][j]=="#":
            A[i][j]=1


for i in range(H):
    for j in range(W):
        if (i+j)%2==1:
            A[i][j]^=1

#for a in A:
#    print(*a)

OP=int(input())

ONE=[]
TWO=[]

for i in range(OP):
    x,y=map(int,input().split())
    if x==1:
        ONE.append(y)
    else:
        TWO.append(y)

ONEX=[]
TWOX=[]

for i in range(1,H):
    for j in range(W):
        if A[i][j]!=A[i-1][j]:
            ONEX.append(i)

for i in range(H):
    for j in range(1,W):
        if A[i][j]!=A[i][j-1]:
            TWOX.append(j)

OC=Counter(ONEX)

for v in OC.values():
    if v!=W:
        print("No")
        exit()

TC=Counter(TWOX)

for v in TC.values():
    if v!=H:
        print("No")
        exit()


if set(ONEX)<=set(ONE) and set(TWOX)<=set(TWO):
    print("Yes")
else:
    print("No")