my %spec = (
    username   => qr/^ [A-Za-z] [-.\w]{2,29} \z/x,
    domain     => qr/ ^h\.net\z | ^(?:ho | [acfikosx])\.com)\z /x,
    email      => qr/^ [\w\.-]+ \@ (?:[a-z\d-]+\.)+ [a-z\d]+ \z/ix,
    service    => qr/^(?:Yes|No)\z/,
    conditions => qr/^Yes\z/,
);