1: (5 7 13)

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

2: (4 8 6)

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

3: (3 11 7)

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

4: (10 20 12)

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