CH[0]:= 1:

CH[1]:= 29*Z[8]:

CH[2]:= 416*Z[7,8]:

CH[3]:= 3934*Z[6,7,8]:

CH[4]:= 27579*Z[5,6,7,8]:

CH[5]:= 152811*Z[4,5,6,7,8]:

CH[6] := 696834*Z[2, 4, 5, 6, 7, 8] + 696714*Z[3, 4, 5, 6, 7, 8]:

CH[7] := 5376072*Z[2, 3, 4, 5, 6, 7, 8] + 2686476*Z[1, 3, 4, 5, 6, 7, 8]:

CH[8] := 26839155*Z[1, 2, 3, 4, 5, 6, 7, 8] + 17906070*Z[4, 2, 3, 4, 5, 6, 7, 8]:

CH[9] := 130561725*Z[1, 4, 2, 3, 4, 5, 6, 7, 8] + 52291590*Z[5, 4, 2, 3, 4, 5, 6, 7, 8]:

CH[10] := 337814652*Z[3, 1, 4, 2, 3, 4, 5, 6, 7, 8] + 473352492*Z[1, 5, 4, 2, 3, 4, 5, 6, 7, 8] + 135539352*Z[6, 5, 4, 2, 3, 4, 5, 6, 7, 8]:

CH[11] := 1879591656*Z[3, 1, 5, 4, 2, 3, 4, 5, 6, 7, 8] + 1412196306*Z[1, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8] + 314945748*Z[7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8]:

CH[12] := 3929205204*Z[4, 3, 1, 5, 4, 2, 3, 4, 5, 6, 7, 8] + 6885995643*Z[3, 1, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8] 
        + 3618392001*Z[1, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8] + 661602162*Z[8, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8]:

CH[13]:= 7457056596*Z[2, 4, 3, 1, 5, 4, 2, 3, 4, 5, 6, 7, 8] + 20539560303*Z[4, 3, 1, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8] 
       + 19973673156*Z[3, 1, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8] + 8156905587*Z[1, 8, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8]:

CH[14]:= 48526490226*Z[2, 4, 3, 1, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8] + 35610543762*Z[5, 4, 3, 1, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8] 
       + 70303917606*Z[4, 3, 1, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8] + 48912450702*Z[3, 1, 8, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8]:

CH[15]:= 133736754672*Z[2, 5, 4, 3, 1, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8] + 189039851748*Z[2, 4, 3, 1, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8]
       + 168533040012*Z[5, 4, 3, 1, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8] + 190011256512*Z[4, 3, 1, 8, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8]:

CH[16]:= 195655493538*Z[4, 2, 5, 4, 3, 1, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8] + 719454087018*Z[2, 5, 4, 3, 1, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8] 
       + 555920637300*Z[2, 4, 3, 1, 8, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8] + 246919898778*Z[6, 5, 4, 3, 1, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8] 
       + 525961859016*Z[5, 4, 3, 1, 8, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8]:

CH[17]:= 264305302362*Z[3, 4, 2, 5, 4, 3, 1, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8] + 1237373198604*Z[4, 2, 5, 4, 3, 1, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8]  
       + 1307246592324*Z[2, 6, 5, 4, 3, 1, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8] + 2439614665806*Z[2, 5, 4, 3, 1, 8, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8]
       + 1047249665226*Z[6, 5, 4, 3, 1, 8, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8]:

CH[18]:= 330591343368*Z[1, 3, 4, 2, 5, 4, 3, 1, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8] + 1880102460784*Z[3, 4, 2, 5, 4, 3, 1, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8]
       + 3187367277772*Z[4, 2, 6, 5, 4, 3, 1, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8] + 4611031253920*Z[4, 2, 5, 4, 3, 1, 8, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8]
       + 6014386623684*Z[2, 6, 5, 4, 3, 1, 8, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8] + 1315010436184*Z[7, 6, 5, 4, 3, 1, 8, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8]:

CH[19]:= 2568855663608*Z[1, 3, 4, 2, 5, 4, 3, 1, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8] + 5891442664984*Z[3, 4, 2, 6, 5, 4, 3, 1, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8]
       + 7555063323376*Z[3, 4, 2, 5, 4, 3, 1, 8, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8] + 3706375569668*Z[5, 4, 2, 6, 5, 4, 3, 1, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8]
       + 16084170338164*Z[4, 2, 6, 5, 4, 3, 1, 8, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8] + 8541784524392*Z[2, 7, 6, 5, 4, 3, 1, 8, 7, 6, 5, 4, 2, 3, 4, 5, 6, 7, 8]: