BA LLB is a 5 year integrated course that offers BA and LLB together in its curriculum. This is a dual degree course.  PU LLB is a 3 year LLB course offered by the Punjab University. But PU LLB is a single degree course. BA LLB can be pursued right after 12th. For pursuing LLB, you should have either a Bachelor's or Master's degree in any discipline. Please check the prospectus for more information: https://pglaw.puchd.ac.in/pdf/LLB19.pdf