1: (4 7 16)

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

2: (6 20 8)

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

3: (1 16 11)

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

4: (0 10 2)

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