CF1352G Special Permutation
Description
A permutation of length $ n $ is an array $ p=[p_1,p_2,\dots,p_n] $ , which contains every integer from $ 1 $ to $ n $ (inclusive) and, moreover, each number appears exactly once. For example, $ p=[3,1,4,2,5] $ is a permutation of length $ 5 $ .
For a given number $ n $ ( $ n \ge 2 $ ), find a permutation $ p $ in which absolute difference (that is, the absolute value of difference) of any two neighboring (adjacent) elements is between $ 2 $ and $ 4 $ , inclusive. Formally, find such permutation $ p $ that $ 2 \le |p_i - p_{i+1}| \le 4 $ for each $ i $ ( $ 1 \le i < n $ ).
Print any such permutation for the given integer $ n $ or determine that it does not exist.
Input Format
The first line contains an integer $ t $ ( $ 1 \le t \le 100 $ ) — the number of test cases in the input. Then $ t $ test cases follow.
Each test case is described by a single line containing an integer $ n $ ( $ 2 \le n \le 1000 $ ).
Output Format
Print $ t $ lines. Print a permutation that meets the given requirements. If there are several such permutations, then print any of them. If no such permutation exists, print -1.