Since each hand has five fingers, the two groups of non-contiguous fingers must be a group of two and a group of three.
Note that we that we start with the two most important fingers on the hand, the ring finger and the pointer finger. Alternatively, we can say that the most important finger used is the one that we point with. This forces the ring finger to be the "other" finger of that group. Once we have cut that group, then we cut the other three.
Marriage: It’s All in Our Hands
The pointer is the strongest finger, and one often used to teach
(“look at the moon”), write with, or maybe lecture a point.
Our pointer may be our strongest and most passionate. But, our fourth
finger, our ring finger, is our gentlest. So, although we should
always feel passion and romantic love in our marriage, it is
gentleness with which we should act towards each other. That should be
our attitude towards our spouse. Instead of acting or reacting with
our pointer, our strongest emotion, we should treat our spouse with
our ring finger, joining our physical symbol of marriage with the
personality of that finger, gentleness.
Another physical reminder is that our ring finger is our only finger
that can’t really stand up alone. One might be able to hold it up a
little, but it hurts. It is not meant to be standing alone.
We consider the fingers moving from the left to the right holding the hands palm down. Thus, the two divisions of the fingers are ring, pointer (4,2 or 2,4) and then the other three.
Since the hands are held palm down, one starts with the leftmost member of each group and moves to the right on that hand. That specifies the order that is used.
The numbers need to be defined so that you can visualize how they show up.
1 - thumb
2 - index
3 - middle
4 - ring
5 - pinkie (or little)
Alternatively, if you define the fingers as 1 - 10 counting from the left palm down, the numbers would be
2, 4, 1, 3, 5, 7, 9, 6, 8, 10