1: (0 2 15)

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

2: (1 19 4)

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

3: (2 17 5)

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

4: (13 18 16)

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