1EThe arrow turns a quarter turn anticlockwise each step.
2BThe shading repeats in a 3-step cycle (diagonal stripes → vertical stripes → white).
3CA ring is added around the central dot each step.
4CEach step: mirror top–bottom.
5BThe dot moves one position clockwise each step.
6DTwo patterns alternate: in every other shape the dot turns one step clockwise; the shapes in between stay the same.
7AThe dot moves one position anticlockwise each step.
8CThe arrow turns a quarter turn anticlockwise each step.
9EThe shading repeats in a 3-step cycle (white → vertical stripes → horizontal stripes).
10AThe dot moves one position clockwise each step.
11EEach step: mirror top–bottom.
12BThe dot moves one position anticlockwise each step.
13COne arrow is added each step.
14EThe shading repeats in a 3-step cycle (black → diagonal stripes → white).
15CEach step: rotate 90° anticlockwise.
16BThe arrow turns a quarter turn clockwise each step.
17DEach step: mirror left–right, then reverse the shading.
18AThe shading repeats in a 3-step cycle (diagonal stripes → vertical stripes → white).
19DThe dot moves one position clockwise each step.
20CTwo independent rules: the corners rotate 180°; the centre reverses shading.
21EEvery row and column contains each shape and each inner mark exactly once.
22DEvery shape in a row has the same inner mark; every shape in a column has the same shape.
23AEvery figure in a row has the same kind of shape; every figure in a column has the same number of shapes.
24DAcross the top row one more shape joins the ring; the same happens in the bottom row.
25CEvery shape in a row has the same shading; every shape in a column has the same number of corners.
26AAcross the top row the stem gains an arm; the same happens in the bottom row.
27DAcross the top row the dots become large; the same happens in the bottom row.
28AEvery figure in a row has the same kind of shape; every figure in a column has the same number of shapes.
29EEvery shape in a row has the same shading; every shape in a column has the same number of corners.
30BEvery figure in a row has the same kind of shape; every figure in a column has the same number of shapes.
31AEvery row and column contains each shape and each shading exactly once.
32DEvery shape in a row has the same number of corners; every shape in a column has the same shading.
33BEvery figure in a row has the same number of shapes; every figure in a column has the same kind of shape.
34EEvery row and column contains each shape and each shading exactly once.
35DEvery figure in a row has the same kind of shape; every figure in a column has the same number of shapes.
36EEvery shape in a row has the same shading; every shape in a column has the same number of corners.
37AEvery shape in a row has the same number of corners; every shape in a column has the same shading.
38DEvery shape in a row has the same number of corners; every shape in a column has the same shading.
39BEvery shape in a row has the same shading; every shape in a column has the same number of corners.
40EEvery figure in a row has the same number of shapes; every figure in a column has the same kind of shape.
41EAll the shapes have the same shading.
42BEach figure has 1 bar at the foot.
43DEach shape has a solid mark in the middle.
44EBoth shapes have 3 sides.
45DEach shape contains the same kind of small shape.
46EBoth shapes have 4 sides.
47BEach shape has 5 corners.
48AEach figure joins 4 shapes in a ring.
49CBoth shapes have 3 sides.
50AEach shape contains a small black dot.
51EEach shape contains 3 smaller shapes.
52CEach shape contains the same kind of small shape.
53BAll the shapes have the same shading.
54CAll the shapes have the same shading.
55DEach shape has 8 corners.
56AEach shape has a solid mark in the middle.
57DEach figure has 3 lines crossing the stem.
58AEach figure joins 4 shapes in a ring.
59BEach shape contains 3 smaller shapes.
60DEach shape contains 2 smaller shapes.
61CTop letter = bars at the foot, bottom letter = shape on top.
62ETop letter = how many dots, bottom letter = shading of the dots.
63CTop letter = frame, bottom letter = centre shape.
64DTop letter = how many joined shapes, bottom letter = shape at each join.
65ATop letter = frame, bottom letter = centre shape.
66DTop letter = frame, bottom letter = centre shape.
67BTop letter = how many lines, bottom letter = where the lines sit.
68DTop letter = shape at each join, bottom letter = how many joined shapes.
69ATop letter = shape, middle letter = which one is black, bottom letter = how they are arranged.
70CTop letter = frame, bottom letter = centre shape.
71ATop letter = the mark, bottom letter = which corner holds the mark.
72DTop letter = frame, bottom letter = centre shape.
73BTop letter = shading, bottom letter = which two shapes.
74ATop letter = where the lines sit, bottom letter = how many lines.
75CTop letter = marker position, bottom letter = shading.
76ETop letter = which one is black, middle letter = shape, bottom letter = how they are arranged.
77CTop letter = bars at the foot, bottom letter = its shading.
78ATop letter = shape, bottom letter = line direction.
79DTop letter = shading, bottom letter = number of corners.
80ETop letter = bars at the foot, middle letter = its shading, bottom letter = shape on top.