For all clusters containing the (IA) 2 or (IA) 1 (IsA) 1 dimers, we include the equivalent clusters where these are replaced by (IP) 1 (W) 1 and (IT) 1 (W) 1 respectively as shown in reaction R1 and R2. This results in the addition of clusters consisting of (IT/IP) 1-2 (W) 0-3 .