2-4 2-4 2, 4
30-60 minutes
Low
2 2 2
30 minutes
Simple
2-5 3-5 3-4
45-60 minutes
3-5 3-5 4-5
45 minutes
15-30 minutes
2-4 2-4 4
60-120 minutes
Medium
2-5 2-5 3
3-7 4-7 5
20-40 minutes
20 minutes
2-6 3-6 4-5
2-4 2-4 3
2-5 2-5 4
60-90 minutes
Space Agency
2-5 3-5 4-5
1-4 2-4 2
30-45 minutes
2-7 2-5 3-4
2-4 3-4 4
2-6 4-6 5-6
60 minutes
2-4 2-4 3-4
20-30 minutes
2-5 3-5 4
45-90 minutes