pairs = [('ALBK', 'SBIN'), ('ANDHRABANK', 'INDIANB'), ('ANDHRABANK', 'SBIN'), ('AXISBANK', 'FEDERALBNK'), 
 ('AXISBANK', 'INDIANB'), ('BANKBARODA', 'FEDERALBNK'), ('BANKINDIA', 'AXISBANK'), ('FEDERALBNK', 'AXISBANK'), 
 ('FEDERALBNK', 'BANKBARODA'), ('FEDERALBNK', 'UNIONBANK'), ('HDFC', 'ICICIBANK'), ('ICICIBANK', 'FEDERALBNK'), 
 ('ICICIBANK', 'HDFC'), ('ICICIBANK', 'INDIANB'), ('INDIANB', 'ANDHRABANK'), ('INDIANB', 'AXISBANK'), ('INDIANB', 'ICICIBANK'),
 ('SBIN', 'ALBK'), ('SBIN', 'ANDHRABANK'), ('UNIONBANK', 'FEDERALBNK')]
unique_pairs = set(tuple(sorted(p)) for p in pairs)
print(unique_pairs)