Find the vectors $T,N,$ and $B$ at the given point.

$r(t)=($:$t^2,\frac{2}{3}{t}^3,t$:$),(1,\frac{2}{3},1)$

$T=\frac{2t}{\sqrt[\phantom{2}]{4t^2+4t^4+1}}i+\frac{2t^2}{\sqrt[\phantom{2}]{4t^2+4t^4+1}}j+\frac{1}{\sqrt[\phantom{2}]{4t^2+4t^4+1}}k$

$N=$

$B=$