1: (5 9 16)

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

2: (10 16 19)

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

3: (4 12 6)

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

4: (8 14 11)

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