1: (0 2 15)

(0)(1 19 4)(2 17 15 13 11)(3 10 7)(5 20 18)(6 16 8)(9 14 12)

2: (1 19 4)

(0)(1)(2 17 15 13 11)(3 10 7)(4)(5 20 18)(6 16 8)(9 14 12)(19)

3: (5 20 18)

(0)(1)(2 17 15 13 11)(3 10 7)(4)(5)(6 16 8)(9 14 12)(18)(19)(20)

4: (2 17 11)

(0)(1)(2)(3 10 7)(4)(5)(6 16 8)(9 14 12)(11 15 13)(17)(18)(19)(20)