java Integer listSize is read from input, then listSize strings are read from input and stored in ArrayList namesToPick. The recursive method listNames$()$ explores all possible arrangements of two names picked from namesToPick. In listNames$(),$ write the base case to output the following items if the size of ArrayList pickedNames is $2$:

$"1$st: $"$

first element in pickedNames

$",2$nd: $"$

second element in pickedNames

End with a newline.

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Ex: If the input is:

$3$

Bob Huy Kim

then the output is:

All possible arrangements:

$1$st: Bob, $2$nd: Huy

$1$st: Bob, $2$nd: Kim

$1$st: Huy, $2$nd: Bob

$1$st: Huy, $2$nd: Kim

$1$st: Kim, $2$nd: Bob

$1$st: Kim, $2$nd: Huy