sketch a reasonably simple combinational circuit implementing each of the following functions.

a$)$ Y$=$A$\text{'}$B$\text{'}+$B$\text{'}$D$\text{'}+$ACD' $($using only NOT gates and AND and OR gates$)$

b$)$ Y$=$A$\text{'}$C$\text{'}+$AB$\text{'}+$AC $($using only NOT gates and NAND and NOR gates$)$