Create a function that determines whether it is possible to build a palindrome from the characters in a string.
PossiblePalindrome("acabbaa") ➞ true
// Can make the following palindrome: "aabcbaa"
PossiblePalindrome("aacbdbc") ➞ true
// Can make the following palindrome: "abcdcba"
PossiblePalindrome("aacbdb") ➞ false
PossiblePalindrome("abacbb") ➞ falseN/A