How to randomly obtain one key-value from a map, then randomly shuffle its string value, then display the key and the value with its letters shuffled?

I am using android studio and kotlin. I have a map collection with keys and values. I would like to randomly shuffle the key-value pairs and save one in a variable. I would then like to access the value of the randomly selected key-value and shuffle the value which is a String of letters. Lastly I would like to display both the key (which is a Sting) and the value (with the shuffled letters).

fun main() { lateinit var currentWord: String

val allWordsList = mutableMapOf<String, String>(
    "pao" to "bread",
    "porta" to "door",
    "carro" to "car"
    )

currentWord = allWordsList.random()

}