On the Subject of Reverse Alphabetize

You know the alphabet, right? Dvoo, tvg ivzwb gl ovzim rg ztzrm!

The module displays a chalkboard with a letter. Determine if this letter is or is not in the alphabatic sequence using the list of rules below and using the median of the result based on the false rules and use the found sequence backwards. If there is no median, the correct Alphabetic string is the modern English Alphabet backwards

Select the left side of the module if the letter is next in the sequence. Select the right side of the module if it is not next in the sequence.

There are exactly three batteries XZURPWCSOFTAIMNLHBQDKVGEYJ
There are exactly two ports GZYHSUKQREXAOTPVMWJDLNFCBI
A BOB indicator is present XCGOJBFMVYUDRHILZKTANEQPWS
There is an odd number of strikes EWLTOHJCPNYAGZDQSRMUXFBKIV
There is an odd number of indicators NECRWMIPQTDJYKOALHUZSXGBFV
An FRK indicator is present HBSENTIWJCYDOLUXMKRVAGZPQF
The first numeric digit of the serial number is odd AIHSXPNWTUKJGLZMOFQYCVBEDR
There are exactly two indicators FPBVETMDUCWKQSLRYZJXIOHAGN
There is an even number of strikes UTXRSQABKFNZIDLJGWYHEVMOCP
There are at least three letters in the serial number ELMGTJQFAXKNHVYCWISUPDRBZO
There are less than two indicators on the bomb GPHDYRCEQUINSFAZLBKOMXTJWV
The number of solved modules is less than five YZNLIHUMPVTQXGSDROWKCABJFE
There is not an even digit in the serial number QNLZMIGCXABRUOEDFTPHVWYKJS
There are more than thirty modules on the bomb QZPUTGCHLESROMIAXNYBDFWVJK
The number of battery holders is less than three U OWPEBSKYQCUNTIXAVFDLRHJGMZ

If a strike is given, the current number in the sequence will be shown in red in the top-left corner of the module for that stage only.

Sometimes, the display might be blank. This is always incorrect since the correct letter is not shown.