1: (0 3 15)

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

2: (1 19 4)

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

3: (3 17 7)

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

4: (12 18 16)

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