input: [0] C# keyword [1] throw [2] true [3] try [4] typeof [5] uint [6] ulong [8] unsafe [9] ushort [10] using [11] value [12] virtual [13] void [14] volatile [15] where [16] while [17] yield [18] : [19] : [20] N/A [21] N/A [22] N/A [7] 
output: unchecked