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

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

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

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

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