Human languages are rule governed. but almost invariably these rules have exceptions in the form of irregularities. Since rules in language are efficient and productive. the persistence of irregularity is an anomaly. https://www.roneverhart.com/HP-Pavilion-15-eg2373cl-15-6-FHD-Touch-Laptop-Intel-Core-i7-1255U-3-50-GHz-GeForce-MX550-16GB-DDR4-512GB-SSD-Windows--p8309/