Grammar XVII (Receiprocal Pronoun)

Receiprocal Pronoun is pronoun which has meaning receiprocal and the common words from receiprocal pronoun stand of:
-with each other/each other
-with one another
-to one another
the Reference: to use the word "with each other/each other" is used for two persons  and to use the word "with one another or to one another" is free in usage.

well, the name of action is done by two persons stand of:
- to speak
- to love
- to shake hand
- to fight
- to be hold
- to understand
- to correct

Example:
BA. When I had picked up Lia just now, Lia and her father had been speaking their experiences with each other.
BAA. When I was picking up Lia just now, Lia and her father were speaking their experiences each other
AA. When I picked up Lia just now, Lia and her father spoke their experiences each other