from fractions import gcd
from collections import defaultdict
for cas in xrange(input()):
    s = defaultdict(set)
    for i in xrange(input()):
        a, b, c = map(int, raw_input().strip().split())
        g = gcd(a, b)
        h = gcd(g, c)
        s[a/g, b/g].add((a/h, b/h, c/h))
    print max(map(len, s.values()))