YOU SAID:
i went to the store to buy a chicken
INTO JAPANESE
私はチキンを買うために店に行きました
BACK INTO ENGLISH
I went to the store to buy chicken
INTO JAPANESE
私はチキンを買いに店に行きました
BACK INTO ENGLISH
I went to the shop to buy chicken
INTO JAPANESE
私はチキンを買うために店に行きました
BACK INTO ENGLISH
I went to the store to buy chicken
INTO JAPANESE
私はチキンを買いに店に行きました
BACK INTO ENGLISH
I went to the shop to buy chicken
it is unlikely that this phrase will ever reach equilibrium