1: (0 5 15)

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

2: (4 19 6)

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

3: (5 17 9)

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

4: (13 18 16)

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