This exercise showed me that while there might be a finite number of types of line (straight, wavy, dots, dashes, etc) an infinite number of variations can be created by applying different pressures, varying spacing, using a variety of shapes and working with different colours and mediums.
The different ‘patterns’ have different characteristics. For example, wavy lines feel like they might be used for rippling water or to show the grain of wood. The pen scribble, dashes and free lines feel as though they have movement.
The heavy marker pen cross hatching feels clumsy compared to using a pencil but it might be appropriate if working large scale.
Stippling creates a subtle effect and requires patience. Using soft and hard stippling creates texture.
Charcoal is amazingly versatile and can create sharp and soft effects depending on whether using the end or the side. Patterns can be made using a putty rubber.
The continuous geometric square lines seem to work least well as they create an image rather than being an obviously useful mark making technique.