Fig. 288—Single line with triangles
Fig. 289—Single line with alternate triangles and ovals
Fig. 290—Triangles and quadrilaterals
Fig. 291—Triangle with spurs
Fig. 288—Single line with triangles
Fig. 289—Single line with alternate triangles and ovals
Fig. 290—Triangles and quadrilaterals
Fig. 291—Triangle with spurs