I. [v73-103] on the intersections of a 2 × 2 cm grid, dots with at random selection of size (5 sizes) are distributed [program as v69-27 (sketchbook VI/ IV)] ; black ink with graphite pencil on paper

II. [v73-104] on the intersections of randomly selected number of diagonally drawn lines (3 to 5, number randomly selected), dots with at random selected size (5 sizes) are distributed [program as v73-72 (sketchbook XIII/ VI)]; black ink with graphite pencil on paper

III. [v73-105] vertical lines at a distance of 5 mm lines are drawn with at random selected colour (red or yellow) [program as v73-77 (sketchbook XIII/ XIII)]; coloured ink with graphite pencil on paper

IV. [v73-106] horizontal and vertical lines at a distance of 5 mm lines are drawn with at random selected colour (red or yellow) [program as v73-81 (sketchbook XIII/ XVII)]; coloured ink with graphite pencil on paper

V. [v73-107] lines with at random selected colour (red or black) drawn in a grid pattern with size 5 × 5 mm [program as v69-62 (sketchbook VI/ IX)]; coloured ink with graphite pencil on paper

VI. [v73-108] horizontal lines drawn at a distance of 1 cm with at random selected colour (red or black) [program as v69-64 (sketchbook VI/ XI)]; coloured ink with graphite pencil on paper

VII. [v73-109] lines with at random selected colour (yellow/blue) drawn in a grid pattern with size 5 × 5 mm [program as v73-80 (sketchbook XIII/ XVI)]; coloured ink with graphite pencil on paper

VIII. [v73-110] horizontal lines at a distance of 1 cm drawn with at random selected colour (red or black) [program as v69-64 (sketchbook VI/ XI)]; coloured ink with graphite pencil on paper

IX. [v73-111] horizontal and vertical lines at a distance of 5 mm lines drawn with at random selected colour (red, yellow or blue) [program as v73-82 (sketchbook XIII/ XVIII)]; coloured ink with graphite pencil on paper

X. [v73-112] on the intersections of 10 randomly selected diagonals, circles are drawn with at random choice of diamater (5 sizes, 22-40 mm) [program as v71-136 (sketchbook X/ VIII)]; black ink with graphite pencil on paper

XI. [v73-113] on the intersections of 10 randomly selected diagonals, circles are drawn with at random selected diameter (5 sizes, 2-10 cm) [program as v71-137 (sketchbook X/ IX)]; black ink with graphite pencil on paper

XII. [v73-159] vertical lines drawn at a distance of 5 mm; for the first linethe colour is selected at random and for each new line the colour is taken left or right from the colour range (18 colours [Castell]) [program as v73-153 (sketchbook XIV/ XV)]; coloured pencil and graphite pencil on paper

XIII. [v73-160] vertical lines drawn at a distance of 5 mm; for the first line the colour is selected at random and for each new line the colour is taken left or right from the colour range (18 colours [Castell]) [program as v73-153 (sketchbook XIV/ XV)]; coloured pencil with graphite pencil on paper

XIV. [v73-161] vertical lines drawn at a distance of 5 mm; for the first line the colour is selected at random and for each new line the colour is taken left or right from the colour range (18 colours [Castell]) [program as v73-153 (sketchbook XIV/ XV)]; coloured pencil with graphite pencil on paper

XV. [v73-162] vertical lines drawn at a distance of 5 mm; for the first line the colour is selected at random and for each new line the colour is taken left or right from the colour range (18 colours [Castell]) [program as v73-153 (sketchbook XIV/ XV)]; coloured pencil with graphite pencil on paper

XVI. [v73-163] vertical lines drawn at a distance of 3 mm; for the first line the colour is selected at random and for each new line the colour is taken left or right from the colour range (18 colours [Castell]) [program as v73-153 (sketchbook XIV/ XV)]; coloured pencil with graphite pencil on paper

XVII. [v73-164] vertical lines drawn at a distance of 10 mm; for the first line the colour is selected at random and for each new line the colour is taken left or right from the colour range (18 colours [Castell]) [program as v73-153 (sketchbook XIV/ XV)]; coloured pencil with graphite pencil on paper

XVIII. [v73-165] vertical lines drawn at a distance of 10 mm with at random choice of colour (18 colours [Castell]) [program as v73-150 (sketchbook XIV/ XV)]; coloured pencil with graphite pencil on paper