package main

import (
    "bytes"
    "encoding/hex"
    "fmt"
    "log"
    "strings"
)

var testCases = []struct {
    rune
    string
}{
    {'A', "41"},
    {'', "C3 B6"},
    {'', "D0 96"},
    {'', "E2 82 AC"},
    {'', "F0 9D 84 9E"},
}

func main() {
    for _, tc := range testCases {