def solve():
  n = int(input())
  row,col = set(),set()
  for i in range(2*n):
    x,y,c = map(str,input().split())
    if c == "x":
      if y in col:
        col.discard(y)
      else:
        col.add(y)
    else:
      if x in row:
        row.discard(x)
      else:
        row.add(x)
  if len(row) == len(col):
    print("Yes")
  else:
    print("No")
  

t = int(input())
for i in range(t):
  solve()