Incremental mark

Today is "Tomoe".This type has many variations.
What do you look this mark ? I saw snake or chlid of flog.

Splited two !! It looks like "Yin and yang".

And three. I think "Tomoe" represents the power on balance.If one of peaces is lost,left will be broken.They are dependent each other.This is a truth about construction of the world.

Kamon is very simple,but it includes deep meanings.