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#group: free  frags first [ 2^0   2^1   2^2   2^3   2^4   2^5   2^6   2^7   2^8   2^9   2^10  2^11  2^12  2^13  ]
#0    : 23645 22    558   [ 13    6     9     8     10    8     3     3     4     2     2     3     3     0     ]
#1    : 10172 13    556   [ 4     4     2     3     5     4     3     4     2     3     3     2     0     0     ]
#2    : 7217  29    511   [ 11    15    14    18    14    3     2     1     5     0     1     0     1     0     ]
#3    : 20649 34    554   [ 15    15    15    20    8     7     1     2     1     2     4     1     3     0     ]
#4    : 3284  11    494   [ 4     6     5     2     6     2     2     3     0     1     0     1     0     0     ]
#5    : 8993  29    552   [ 5     6     10    11    19    3     4     6     7     1     3     1     0     0     ]
#6    : 23789 9     494   [ 3     3     5     4     3     2     3     1     1     1     0     1     1     2     ]
#7    : 19928 1     552   [ 0     0     0     1     1     0     1     1     1     0     1     1     2     1     ]