jmc

If three flicks are equivalent to eight flecks, then twelve flicks are equivalent to $4\cdot 8=32$ flecks. Also, $32$ flecks are equivalent to $(32\text{flecks})\cdot \frac{6\text{flocks}}{4\text{flecks}}=48\text{flocks}$. Thus, $\boxed{48}$ flocks are equivalent to $12$ flicks.