1: (1 5 11)

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

2: (4 15 6)

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

3: (10 16 13)

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

4: (3 7 11)

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