Function: invert(invert(numbers("per") if numbers('yyx') > numbers("xxr") else numbers("xyx")) if numbers('yyx') if numbers("xxr") > numbers('yyx') if numbers("xyx") > numbers("per") else numbers("xxr") else invert(numbers("xyx") if numbers("xxr") > numbers('yyx') else numbers("per")) > numbers("xxr") if numbers("xyx") > numbers('yyx') else numbers("per") else numbers("xxr"))
