Fighter does not want (to) Lose. Lose is the opposite of Acquire. Acquire is a synonym of Secure. Chain can be used for Secure. 
Practice is the opposite of Test. Test is related to Bubble. 
Fighter --NotDesires--> Lose <--Antonym--> Acquire <--Synonym--> Secure <--UsedFor-- Chain 
Practice <--Antonym--> Test <--RelatedTo--> Bubble 