Sorry, but there is nothing yet known as a replacement for trigonal pyramid.


Perhaps your query is too complicated? For example there are alternatives to the following parts of your query:

trigonal (1)
pyramid (42)

Maybe some reasonable answers will be found next time you come.

Your alternative for trigonal pyramid is not listed? Suggest!


No companions for trigonal pyramid have been suggested so far.
You have in mind a companion for trigonal pyramid and it is not yet here? Propose!



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