1: (1 4 8)

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

2: (8 11 13)

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

3: (2 9 6)

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

4: (7 14 12)

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