1: (1 5 13)

(0 20 2)(1 10 15 13 3 7 4)(5)(6 12 11)(8 18 16 14 9)(17 21 19)

2: (4 15 7)

(0 20 2)(1 10 15)(3 7 13)(4)(5)(6 12 11)(8 18 16 14 9)(17 21 19)

3: (9 16 14)

(0 20 2)(1 10 15)(3 7 13)(4)(5)(6 12 11)(8 18 16)(9)(14)(17 21 19)

4: (3 7 13)

(0 20 2)(1 10 15)(3)(4)(5)(6 12 11)(7)(8 18 16)(9)(13)(14)(17 21 19)