A structure that occur in a flat or triangle in which wave B goes beyond the start of wave A, and wave C does not go below the end of wave A.

By continuing to use the site, you agree to the use of cookies. Learn more.

The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this.