n = int(input())
a = []
for i in range(n):
    s = input().split()
    c = int(s[0])
    t = []
    for j in range(1, len(s)):
        t.append(int(s[j]))
    t.sort()
    a.append(t)
a.sort()

for i in range(len(a)):
    for j in range(len(a[i])):
        print(a[i][j], end=" ")
    print()

/**************************************************************
	Problem: 1503
	User: admin
	Language: Python
	Result: Accepted
	Time:94 ms
	Memory:34480 kb
****************************************************************/