The pins, equal in number to the number of sides in the main figure are attached to the midpoint of a side of the main figure in case of figures (2), (3), (4) and (5). In fig. (1), these pins are attached to a vertex of the main figure.

In all other figures, the two line segments are parallel to each other.

In all other figures, the arrow and the V sign lie towards the black end of the main figure.

In all other figures, there are two small line segments towards the pin and three small line segments towards the arrow.

The lines outside the shaded circle are not equally distributed along the circumference in fig. (2).

In all other figures, the lower-right quarter portion is shaded.

Only in fig. (5), the arrowhead along the circumference of the circle indicates motion in an ACW direction.

All other figures are divided into equal parts.

Figure (1) and fig. (3) can be rotated into each other and fig. (4) and fig. (5) can be rotated into each other.

Each one of the figures except fig. (2), consists of five arrowheads.