1DEach step: rotate 90° clockwise.
2BTwo patterns alternate: in every other shape the dot turns one step anticlockwise; the shapes in between stay the same.
3EThe shading repeats in a 3-step cycle (white → vertical stripes → horizontal stripes).
4BThe shading alternates between white and grey each step.
5AThe arrows turn a quarter turn anticlockwise each step.
6AThe shading repeats in a 3-step cycle (black → diagonal stripes → white).
7ATwo patterns alternate: in every other shape the dot turns one step anticlockwise; the shapes in between stay the same.
8BThe shape grows larger each step.
9EEach step: mirror left–right.
10BThe shape gains one side each step.
11DOne more line crosses the stem each step.
12AThe shape gains one side each step.
13DThe shading repeats in a 3-step cycle (diagonal stripes → vertical stripes → white).
14CA ring is added around the central dot each step.
15CTwo independent rules: the corners reverse the shading; the centre reverses shading.
16DThe shading alternates between vertical stripes and black each step.
17DThe shading alternates between vertical stripes and horizontal stripes each step.
18DThe shading repeats in a 3-step cycle (white → vertical stripes → horizontal stripes).
19BEach step: rotate 90° clockwise.
20BTwo independent rules: the corners mirror top–bottom; the centre changes to the next shape in the cycle (circle→square→diamond→triangle→house→kite→flag→arrowhead→circle).
21DEach shape: rotate 90° clockwise, then reverse the shading.
22BEach shape: rotate 90° clockwise, then reverse the shading.
23AThe stem gains one more arm at the top.
24BEach shape: rotate 90° anticlockwise.
25BOne bar is removed at the foot.
26COne bar is removed at the foot.
27DEach shape: the dot turns 180°.
28AEach shape: rotate 90° anticlockwise.
29CEach shape: the dot turns 180°.
30DEach shape: rotate 90° clockwise.
31DThe shading is reversed.
32BThe shading of every mark is reversed.
33CEach shape: the dot turns 90 anticlockwise°.
34BEach shape: mirror top–bottom, then reverse the shading.
35BTwo independent rules: the corners mirror top–bottom; the centre changes to the next shape in the cycle (circle→square→diamond→triangle→house→kite→flag→arrowhead→circle).
36DTwo independent rules: the corners stay the same; the centre reverses shading.
37ETwo independent rules: the corners rotate 180°; the centre changes to the next shape in the cycle (circle→square→diamond→triangle→house→kite→flag→arrowhead→circle).
38CTwo independent rules: the corners rotate 90° clockwise; the centre reverses shading.
39AEach shape: the dot turns 90 clockwise°.
40CEvery arrow turns clockwise, a quarter turn.
41AFour shapes share the same size of the dots; one does not.
42CFour shapes share the same shading of the dots; one does not.
43AFour shapes share the same type of small shape; one does not.
44EFour shapes share the same shape on the right; one does not.
45BFour shapes share the same shading; one does not.
46CFour shapes share the same size of the dots; one does not.
47CFour shapes share the same shape at each join; one does not.
48EFour shapes share the same top of the stem; one does not.
49AFour shapes share the same outline style; one does not.
50DFour shapes agree on whether a corner points inwards; one does not.
51BFour shapes agree on where the shaded part sits; one does not.
52AFour shapes agree on where the shaded part sits; one does not.
53DFour shapes share the same number of bars at the foot; one does not.
54CFour shapes share the same shape on top; one does not.
55CFour shapes share the same outline style; one does not.
56BFour shapes share the same outline style; one does not.
57AFour shapes share the same shading; one does not.
58BFour shapes share the same shading; one does not.
59AFour shapes share the same outline style; one does not.
60DFour shapes share the same number of corners; one does not.
61ATop letter = frame, bottom letter = centre shape.
62CTop letter = how many dots, bottom letter = size of the dots.
63ATop letter = size, bottom letter = shading.
64BTop letter = how much is black, bottom letter = position of the black part.
65CTop letter = how many lines, bottom letter = where the lines sit.
66CTop letter = number of corners, bottom letter = shading.
67CTop letter = shape on top, bottom letter = bars at the foot.
68ATop letter = its shading, bottom letter = bars at the foot.
69ATop letter = whether a corner points inwards, bottom letter = shading.
70BTop letter = number of corners, bottom letter = whether a corner points inwards.
71ETop letter = bars at the foot, middle letter = shape on top, bottom letter = its shading.
72DTop letter = how many dots, bottom letter = size of the dots.
73DTop letter = shape type, bottom letter = shading.
74CTop letter = which shape is on top, bottom letter = which two shapes.
75CTop letter = where the lines sit, bottom letter = how many lines.
76CTop letter = shading, middle letter = size, bottom letter = shape.
77DTop letter = where the lines sit, bottom letter = how many lines.
78ETop letter = shape, bottom letter = which one is black.
79CTop letter = shading, bottom letter = number of corners.
80CTop letter = shading, bottom letter = number of corners.