Pattern Nails

I'm not sure what to call these nails. They look like a pattern to me, but not sure what pattern. Maybe you guys could help me out. Anyway, whatever they are called I LOVE THEM!! I know I say that about every manicure, but I swear I love these. I want to try them out in different color combinations. I used Sinful Color Rainstorm as a basecoat and different acrylic paints for the lines. I used a paint brush to make the lines. Hope you enjoy them as much as I do...lol..