1: (2 5 15)

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

2: (4 17 6)

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

3: (14 20 16)

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

4: (5 19 7)

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