#E8.1-4.rb

aaaa=[" aa ",4,5," bb "]
bbbb=[4,1,3,2,5]

print aaaa + bbbb    ,"\n"
print aaaa * 2        ,"\n"
print bbbb - aaaa    ,"\n" 

print aaaa | bbbb   ,"\n" 
print aaaa & bbbb    ,"\n" 

print bbbb.sort    ,"\n" 
print aaaa.reverse    ,"\n"