The first people (or only the first men or the first women) are not created but come to earth from the underworld (from a cave) or from a small enclosure under the earth or on its surface (tree trunk, rock, gourd, etc.). Many people of both sexes and of different ages or people and different species of animals come out together
When a woman of the child-bearing age tries to come from one world to another (e.g. from sky to earth), the communication between the worlds is blocked or broken forever
For different reasons, sexual contact with a woman is deadly dangerous for a man
Small creatures in female or male genitals are dangerous for the partner
A girl or young woman who is usually occupied with domestic work (is cooking, weaving, etc.) sits on the ground and copulates with a penis-like creature that crawls from below into her vagina
A woman or a girl takes a snake, an eel (i.e. Pacific snake-eel), a lizard, or a worm for husband or paramour. People kill or badly injure him, the woman and/or her progeny or the woman herself is transformed into snake. Cf. motif k76b: the snake-husband becomes and remains a handsome man
Person or creature has toothed anus or second head in place of the anus
A woman is impregnated by an animal, usually by a snake. People of hostile nation originate or receive their culture from her progeny or from her paramour's relatives
Antagonist perishes falling into the water or trying to cross a water body
A woman becomes the wife of an animal (rare: other non-human being). Her husband cares for her but ultimately the animal, the woman, her children or her relations are killed, she turns into an animal herself, animals and humans become enemies, etc.
Woman is dangerous because biting or stinging animal or animals is (are) inside her genitals (and not only the head of such an animal)
A girl (a woman, a group of women) intentionally takes a penis-being, a snake, an eel, a lizard, a worm, a big water animal or water monster or a big terrestrial mammal for paramour. People kill or maim the paramour, the woman and/or her progeny or she is transformed herself into an animal. She is blamed for her behavior