I. [v73-158s] vertical and horizontal lines drawn at a distance of 5 mm, but as a group of 20 lines horizontal and vertical in the center; the start of the first colour line at random and each new line taken left or right from the colour range (18 colours [Castell]) [program as v73-157]; coloured pencil with graphite pencil on paper

II. [v73-166] groups of lines with randomly selected number of lines (1-9) connecting 2 sides; black ink with graphite pencil on paper

III. [v73-167] 2 grids randomly alternating in red and black colour; coloured ink with graphite pencil on paper

IV. [v73-168] 17 parallel lines at 1 cm distance connecting 2 sides with random selected slope; black ink with graphite pencil on paper

V. [v73-169] 2 grids with at random position [program as v73-167]; black ink with graphite pencil on paper

VI. [v73-170] 2 grids with random position [program as v73-169]; yellow ink with graphite pencil on paper

VII. [v73-171] lines with randomly selected number (3-10 → 8) and colour (18 colours) and at random connecting two sides; coloured pencil with graphite pencil on paper

VIII. [v73-172] groups of lines with randomly selected number (1-9) and colour (18 colours) connecting 2 sides; coloured pencil with graphite pencil on paper

IX. [v73-176A-B] inside the squares of a 1 × 1 cm grid X (on the left half - A), / or \ (on the right half - B) drawn with at random choice of colour (6 colours); coloured pencil with graphite pencil on paper

X. [v73-197] lines drawn with at random choice of distances from one side to the other, horizontal and vertical; black ink with graphite pencil on paper

XI. [v73-198] the lines of v73-197 are used as guides to connect inside each square at random selected lines from top left to bottom right or top right to bottom left; black ink with graphite pencil on paper

XII. [v73-199] vertical lines drawn at a distance of 5 mm starting with a randomly selected colour and continued till the number in the table changes from even to uneven or vice versa; coloured pencil with graphite pencil on paper

XIII. [v73-202] vertical lines drawn at a distance of 3 mm, starting with a randomly selected colour and continued till the number in the table changes from even to uneven or vice versa [program as v73-199]; coloured pencil with graphite pencil on paper

XIV. [v73-203] vertical lines drawn at a distance of 5 mm, one line is at random omitted; black inki with graphite pencil on paper

XV. [v73-204] vertical and horizontal lines drawn at a distance of 5 mm, one line (horizontal/vertical) is at random omitted [program as v73-203]; black ink with graphite pencil on paper

XVI. [v73-205] vertical lines drawn at a distance of 5 mm, 3 blue lines are randomly added; coloured ink with graphite pencil on paper

XVII. [v73-206] on the intersections of the lines of a grid (1-5 cm) horizontal dashes are drawn (5 mm) with at random choice of colour (black, blue, red and yellow); coloured ink with graphite pencil on paper

XVIII. [v73-207] on the intersections of the lines of a grid (from drawing XII. - v73-199), horizontal dashes (5 mm) are drawn with at random choice of colour (black, blue, red and yellow) [program as v73-199 and 206]; coloured ink with graphite pencil on paper

XIX. [v73-208] parallel groups of horizontal and vertical lines drawn at a distance of 1 cm with at random selected thickness of the line (0.2 - 0.4 - 0.8 - 1.2 mm); black ink with graphite pencil on paper

XX. [v73-209] on the intersections of a 2 × 2 cm grid, dots are distributed with weighted random chance for size (5 sizes) and colour (red, blue and yelllow); coloured ink with graphite pencil on paper

XXI. [v73-210] on the intersections of a 1.5 × 1.5 cm grid, dots are distributed with weighted random choice of size (2 sizes) and colour (black or blue); coloured ink with graphite pencil on paper

XXII. [v73-211] vertical lines drawn at 5 mm distance with weighted random choice of colour (black or blue); coloured ink with graphite pencil on paper

XXIII. [v73-212] on the intersections of a random grid [= v73-197] dots are distributed with random choice of size (5 sizes); black ink with graphite pencil on paper