I. [v71-92] horizontal lines at a distance of 5 mm with at random thickness of the line; black ink with graphite pencil on paper

II. [v71-93] 4 squares each with 1 line connecting 2 corners with at random direction / or \ ; black ink with graphite pencil on paper

III. [v71-94] 4 squares each with 1 line connecting 2 corners with at random direction / or \ [program as v71-93]; black ink with graphite pencil on paper

IV. [v71-95] 1 line connecting 2 corners with at random direction / or \ ; black ink with graphite pencil on paper

V. [v71-96] 3 × 3 squares of a 2 × 2 cm grid form 1 block; inside the squares the corners are connected by a line with at random direction / or \ , but each block with the same direction; black ink with graphite pencil on paper

VI. [v71-97] 3 × 3 squares of a 2 × 2 cm grid form 1 block; inside the squares the corners are connected by a line with at random direction / or \ , but each block with the same direction [program as v71-96]; black ink with graphite pencil on paper

VII. [v71-99] inside the squares of a 2 × 2 cm grid the corners are connected by a line with at random direction / or \ ; black ink with graphite pencil on paper

VIII. [v71-102] on the intersections of the lines of a 1 × 1 cm grid, dots (5 sizes) are arranged; for each group of 4 intersections one dot with at random selected place and size, black ink with graphite pencil on paper

IX. [v71-103] horizontal lines on 5 mm distance with at random choice of colour (red and black); red and black ink with graphite pencil on paper [annotated on the reverse '(oninteressant door gering aantal lijnen; / zichtbaar is echter het anders zijn tov kwadraties / formaat)' (graphite pencil)]

X. [v71-104] horizontal lines on 5 mm distance with at random choice of colour (yellow and black); yellow and black ink with graphite pencil on paper

XI. [v71-105] vertical lines on 5 mm distance with at random choice of colour (red and black); red and black ink with graphite pencil on paper [annotated '(zie V71-103) / (aantal lijnen hier meer daardoor / werking van formaat beter zichtbaar) / (verder in beide gevallen niet geheel [= intervened] vergelijkbaar / met het gedachte. lange grote [= intervened] formaten die zelfde [= underlined] / lijnafstand hebben (bv 30 × 100 of 50 × 180 cm etc.)]

XII. [v71-111] on the intersections of the lines of a 3 × 3 cm square grid, circles are placed with randomly selected diameter (28, 30, and 32 mm); black ink with graphite pencil on paper

XIII. [v71-112] on the intersections of the lines of a 3 × 3 cm grid circles are placed with randomly selected diameter (28, 30, and 32 mm); black ink with graphite pencil on paper

XIV. [v71-113] inside the squares of a 2 × 2 cm grid, lines are arranged 1° with at random choice to place the line or not and 2° if yes, with at random selection / or \ ; black ink with graphite pencil on paper

XV. [v71-114] inside the squares of a 3 × 3 cm grid, lines are placed with at random choice X, / or \ ; black ink with graphite pencil on paper

XVI. [v71-115] inside the squares of a 3 × 3 cm grid, lines are arranged with at random choice / , \ , X or empty; black ink with graphite pencil on paper

XVII. [v71-116] inside the squares of a 3 × 3 cm grid, lines are arranged with at random choice of / , \ , X or empty [program as v71-115]; black ink with graphite pencil on paper

XVIII. [no work number] inside the squares of a 3 × 3 cm grid, lines are arranged with at random choice of / , \ , X or empty [program as v71-115]; black ink with graphite pencil on paper