# UUID: 0d361bce-a291-443a-b286-9c58265b6e46
t = int(input())

for i in range(t):
    a, b = map(int, input().split())
    if a < 33:
        print("-1 -1")
    else:
        a -= 33
        if a > 10:
            a -= 10
            b -= 11
            if b >= 0:
                print("10 11")
            else:
                print("-1 -1")
                continue

        if a > 0:
            b -= 11
            if b >= 0:
                print(f"{a%10} 11")
            else:
                print("-1 -1")
                continue
        
        if b > 9:
            b -= 10
            print("11 10")

            if b > 9:
                b -= 10
                print("11 10")
            else:
                print("11 0")
        else:
            print("11 0")
            print("11 0")
        print(f"11 {b}")