1: (0 2 15)

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

2: (1 20 3)

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

3: (2 17 4)

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

4: (14 18 16)

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