Simplify the following Boolean functions, using three$-$variable maps: The Karnaugh test

${?}_1,F(x,y,z)=(0,2,4,5)$

${?}_2,F(x,y,z)=(0,2,4,5,6)$

$3,F(x,y,z)=(0,1,2,3,5)$

${?}_4,F(x,y,z)={\displaystyle \underset{?}{\overset{?}{}}}(1,2,3,7)$

Simplify the following Boolean functions, using four$-$variable maps:

$5,F(w,x,y,z)=(1,4,5,6,12,14,15)$

$6,F(A,B,C,D)=(2,3,6,7,12,13,14)$

${?}_7,F(w,x,y,z)=(1,3,4,5,6,7,9,11,13,15)$

$8,F(A,B,C,D)=(0,2,4,5,6,7,8,10,13,15)$