yeah but what i meant was why cant i directly go from 3^i to 3^0 if k permits. this too has become clear because we gain more from killing off the highest powers of 3 than by creating more lower powers of 3

in C2 why do we always transfer from tr[i] to tr[i-1], in that order. I mean why cant we start from tr[0] to tr[i-1] and transfer from tr[i] whenever possible? this basically fails on the 180th number of tc 2 and i have no clue why.