def solve():
    n, s = map(int, input().split())
    a = list(map(int, input().split()))
 
    summation = 0
    c1 = 0  
    c2 = 0  
    c3 = 0  
 
    for val in a:
        summation += val
        if val == 0:
            c1 += 1
        elif val == 1:
            c2 += 1
        elif val == 2:
            c3 += 1
 
    if s < summation or s == summation + 1:
        print('0 ' * c1 + '2 ' * c3 + '1 ' * c2)
    else:
        print(-1)
t=int(input())
for i in range(t):
	solve()
 

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NgozIDIKMCAxIDIKMyAzCjAgMSAyCjMgNgowIDEgMgozIDQKMCAxIDIKMyAxMAowIDEgMgo1IDEwMDAKMiAwIDEgMSAyCg==

6
3 2
0 1 2
3 3
0 1 2
3 6
0 1 2
3 4
0 1 2
3 10
0 1 2
5 1000
2 0 1 1 2