1/3 = 10/302/3 = 20/301/5 = 6/302/5 = 12/304/5 = 24/301/6 = 5/305/6 = 25/303/10 = 9/307/10 = 21/309/10 = 27/30
1/3 = 10/30
2/3 = 20/30
1/5 = 6/30
2/5 = 12/30
4/5 = 24/30
1/6 = 5/30
5/6 = 25/30
3/10 = 9/30
7/10 = 21/30
9/10 = 27/30