PROGRAMMING:[nested cycle] [-- exercise a --]

Wang Xue likes to exercise very much. She bought a set of 7-handed dumbbells on Taobao during her double 11. As shown in the figure, dumbbells have different weight specifications. Wang Xue is a rich second generation. In order to show off her wealth, she bought 99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999. She has developed an exercise program for herself. She may install different weights of dumbbells to exercise every day, and practice her eight abdominal muscles, so as to better learn (Liao) and (Han). It suddenly occurred to her that there are several ways to combine n dumbbells into m kg weight? You can use any dumbbell of the same kind, because he bought too many dumbbells, which must be enough.

###Input format:
First, enter t to indicate that there will be t groups of volume data to be tested (T < = 10000). Enter two positive integers n and m for each group, separated by spaces. N is the number of dumbbells Wang Xue needs, and M is the weight he wants to combine. Where 1 < = n < = 10, 1 < = m < = 1000.
###Output format:
Corresponding to each group of input data, output different number of schemes, each group of output exclusive row.
###Input example:
Here is a set of inputs. For example:
```in
two
3 3
3 5
```
###Output example:
The corresponding output is given here. For example:
```out
one
two
```







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