$3\mathrm{.}24$ List the point indices for all atoms that are associated with the BCC unit cell $($Figure $3\mathrm{.}2).$

Figure $3\mathrm{.}2$ For the body$-$centered cubic crystal structure, $($a$)$ a hard$-$sphere unit cell representation, $($b$)$ a reduced$-$sphere unit cell, and $($c$)$ an aggregate of many atoms.