import sequtils, strutils var ps = { 2:8, 3:9, 7:9 } let n = parseInt readLine stdin for _ in 0 ..< n: let xs = stdin.readLine.split.map parseInt x1 = xs[0] y1 = xs[1] x2 = xs[2] y2 = xs[3] for i in 0 .. 2: if ps[i] == (x1, y1): ps[i] = (x2, y2) if ps == { 5:8, 4:8, 6:8 }: echo "YES" else: echo "NO"