Create a function named nestedRemoval that accepts three string arguments. The first string is a sentence known as text that contains at least one occurrence of leftPattern and rightPattern. The left pattern and right pattern are single letter strings that you are attempting to remove from text. Your goal is to remove only the patterns when left pattern has an equal number of corresponding right patterns. The patterns are removed in pairs only when there is a balanced number of left and right patterns. The patterns may be nested within the text, and there is no guarantee that a left pattern will occur before the right pattern.

def nestedRemoval$($text: str$,$ leftPattern: str$,$ rightPattern: str$)->$ str