Left: Relationship between the durations of converging motion and the duration from the moment of time of closest position up to the first flare occurrences. Right: Relationship between difference of the distances between the barycenters at the start of the convergence phases and at the closest approach (D _C) and the distance between the point of closest approach to the position of first flare occurrence (D _FM) at photospheric level. The estimated errors are given in the lower right corner.