h,w=map(int,input().split())
canvas=['.'+input()+'.'  for i in range(h)]
canvas.append('.'*(w+2))
canvas.insert(0,'.'*(w+2))

for i in range(1,h+1):
    for j in range(1,w+1):
        if canvas[i][j]=='#':
            if canvas[i-1][j]=='.' and canvas[i][j-1]=='.' and canvas[i+1][j]=='.' and canvas[i][j+1]=='.':
                print('No')
                print(i,j)
                exit()
print('Yes')