Oracle is planning to certify 22.214.171.124 on Windows Server 2012 R2. 11gR2 is not planned to be certified on Windows 2012 R2.
As of today, 126.96.36.199 is not released. It is planned to be released in 2nd half of calendar year 2014.
Reference: Release Schedule of Current Database Releases (Doc ID 742060.1)
Oracle is not planning to certify 188.8.131.52 on Windows 2012 R2.
Only 184.108.40.206 or higher is only planned.