$$\left. \begin{array} { l } { B = \{ 2 , 4 , 6 , 8 , 10 \} } \\ { A = \{ 1 , 2 , 3 , 4 , 5 , 6 \} } \end{array} \right.$$
$B=2,\ A=1,\ a=4,\ b=6,\ c=8,\ d=10,\ \text{false},\ f=3,\ g=4,\ h=5,\ \text{false}$
