1 "Violations are punishable by fines."<br/>2 "Violations are subject to fines."<br/>3 "Violations are liable to fines."<br/><br/>4 "Violators are punishable by fines."<br/>5 "Violators are subject to fines."<br/>6 "Violators are liable to fines."<br/><br/>Could some of them be nonstandard English?