For each of the following, write one value for the variable on the left that will result in a successful regular expression match:
1) $var1 =~ /AaEeIiOoUu{2}/
2) $var2 =~ /^.{1,3}$/
3) $pin =~ /^0-9{4}$/
4) $hecks =~ /A-F0-9A-F0-9+/
5) $notwrd =~ /^\w+/