1: (0 3 11)

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

2: (1 20 6)

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

3: (2 19 4)

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

4: (3 12 5)

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