Linear seating: Single row facing North/South
medium
1 of 5 Lessons
Parallel rows: Persons facing each other with variables
medium
2 of 5 Lessons
Seating arrangement with uncertain number of persons
medium
3 of 5 Lessons
Linear seating with ages and dates of birth
medium
4 of 5 Lessons
Logical grouping in a single row based on professions
medium
5 of 5 Lessons