1: (0 2 15)

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

2: (1 19 4)

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

3: (2 17 7)

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

4: (14 18 16)

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