MOD = 998244353
T = int(input())
for _ in range(T):
    N = int(input())
    edge = [[] for _ in range(N)]
    edge_list = []
    for _ in range(N-1):
        u,v = list(map(int,input().split()))
        u -= 1;v -= 1
        edge[u].append(v)
        edge[v].append(u)
        edge_list.append((u,v))

    ans = 0
    for u,v in edge_list:
        ans += (len(edge[u]) - 1) * (len(edge[v]) - 1)
        ans %= MOD
    print(ans)