{
    "ch-1" : [
        {
            "function" : "consecutivesequence",
            "arguments" : [ 10, 4, 20, 1, 3, 2 ],
            "result" : 4
        },
        {
            "arguments" : [ 0, 6, 1, 8, 5, 2, 4, 3, 0, 7 ],
            "result" : 9
        },
        {
            "arguments" : [ 10, 30, 20 ],
            "result" : -1
        }
    ],
    "ch-2" : [
        {
            "function" : "nextpermutation",
            "arguments" : [ 1, 2, 3 ],
            "result" : [ 1, 3, 2 ]
        },
        {
            "arguments" : [ 2, 1, 3 ],
            "result" : [ 2, 3, 1 ]
        },
        {
            "arguments" : [ 3, 1, 2 ],
            "result" : [ 3, 2, 1 ]
        }
    ]
}