User blog comment:Boboris02/Compearing BHAN to FGH/@comment-5529393-20161202230115/@comment-30118230-20161204181729

1.//a,b,1,c,1,d,1,f,1,g// is evaluated as //a,b,1,c-1,1,//a,b,1,c,1,d-1,1,f,1,g//,1,f,1,g// using rule 11,untill either c or d become 1,then we have a triple chain of ones,which is evaluated using rule 13.

2.Rule 12 says that an expression like //a,b,1,1,c// for example will be solved like so: //a,b,1,1,c//=//a,b,//a,b,a,c//,a,c-1//,so //3,3,1,1,2//=//3,3,//3,3,3,2//,3,1// = //3,3,//3,3,3,2//,3//,because in this case a=3 and you replace the 1,1 inside the inner array with a=3.

3.# means the rest of the array and #-1 means remove 1 from the last entry in that array.