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

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

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

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

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