1: (0 3 16)

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

2: (1 20 4)

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

3: (3 19 10)

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

4: (8 17 11)

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