1. An apparatus, comprising: a controller to: determine states of memory cells of a group of memory cells operated as fractional digit memory cells; and determine soft data based, at least partially, on: dimensions to which particular memory cells correspond with respect to the group of memory cells, determined states of the memory cells with respect to a state adjacent a state corresponding to a swapping shell, and whether a particular memory cell is a candidate for swapping, wherein the particular memory cell is one of a group of G memory cells programmed such that a combination of respective program states of the G memory cells maps to a constellation point corresponding to an N digit data value, the group of G memory cells used to store N/G digits of data per memory cell.