Both geisha and maiko paint the oshiroi on the back of their neck into a pattern called eri-ashi (襟足) - "neck stripes", describing a two-stripe pattern specifically. For formal occasions, a three stripe pattern is used, called sanbon-ashi (三本足) ('three pointed stripes'). Eri-ashi can be painted freehand with a smaller brush, but sanbon-ashi are painted using a stencil.[1]