All the transistors in the circuits provided have the same values of $V_{th},k^{\text{'}},\frac{W}{L},$ and $.$ Using the parameters provided below and assuming all transistors operate in saturation, find the voltages $V_1,V_2,V_3,$ and $V_4.$

$V_{th}=0\mathrm{.}6V$

$k^{\text{'}}=30\frac{A}{V^2}$

$\frac{W}{L}=10$

$=0$

$I_{\text{b}\text{i}\text{a}\text{s}}=400A$

$V_{DD1}=13V$

$V_{DD2}=10V$

$V_{DD3}=12V$

$V_{DD4}=13V$

$V_1=$ v

$V_2=q,$ v

$V_3=$ V

$V_4=$ v