Hi , I have a file which have input as like below 

pet="cat"|hate="rat"|like="dog"
hate="rat"|like="dog"|pet="cat"
hate="rat"|like="horse"|pet="cat"
pet="cow"|hate="rat"|like="dog"
hate="rat"|like="dog"|pet="cow" 

And output im looking is 

pet="cat"|hate="rat"|like="dog" 
pet="cow"|hate="rat"|like="dog" 

Any first instance where I find unique value for pet and hate I wanted to print. Thanks