Modulation through any small minor 5/6 or 3/4 chord 1 tone lower

You can use a small minor 5/6 (polu-umenschenny; maly umenschenny 5/6) to modulate to a major or minor a tone lower than it's prima. For example: from re-fa-la-si (the 5/6 of si-re-fa-la) you can go to A major or A minor. This opens many more opportunities for modulation, because you can find many natural minor chords in any tonality and add a great second at the top, or can turn any major chord into a minor, and add a great second at the top – and then modulate. This is to be analyzed and used in composition.