import sys
input=sys.stdin.readline

T=int(input())
for _ in range(T):
    H,W=map(int,input().split())

    if H%3==0 or H%3==1:
        alpha=0
    else:
        alpha=2

    if W%3==0 or W%3==1:
        beta=0
    else:
        beta=2

    for i in range(H):
        print(*[(i%3!=alpha)+(j%3!=beta) for j in range(W)])