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

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

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

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

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