import sys
board = dict()
row = ['1', '2', '3', '4', '5', '6', '7', '8']
col = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H']
number = 0
color = 'black'
for r in range(8):
for c in range(8):
coordinate = col[c] + row[r]
number += 1
if r % 2 == 0:
if number % 2 == 0:
color = 'white'
else:
color = 'black'
else:
if number % 2 == 0:
color = 'black'
else:
color = 'white'
board[coordinate] = color
board[str(number)] = color
T = int(sys.stdin.readline())
for _ in range(T):
notation_1, notation_2 = sys.stdin.readline().rstrip().split()
if board[notation_1] == board[notation_2]:
print('YES')
else:
print('NO')