. Give DFAs that accept the following languages over = {a, b}.

a) L1 = {x | x contains the substring aba}

b) L2 = L(a b )

c) L3 = {x | na(x) + nb(x) is even }

d) L4 = {x | na(x) is a multiple of 5 }

e) L5 = {x | x does not contain the substring abb}

f) L6 = {x | x has no as in the even positions}

g) L7 = L(aa | aba b )

2. What languages do the following DFAs accept? a) b)