Conversion from regular expression to nfa:

$($a$)$ Find an nfa with two states for $L(a{a}^{**}).$

$($b$)$ Find an nfa with two states for L$($a$).$

$($c$)$ Find an nfa with two states for $L((ab{)}^{**}).$

$($d$)$ Find an nfa with at most five states for L$($aa$*+($:$(ab{)}^{**}\}.$