1: (5 8 12)

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

2: (4 9 6)

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

3: (8 16 10)

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

4: (11 17 13)

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