4 - quaternity


bases of DNA




chambers in the heart

seasons in a year

forces of nature

elements

horsemen

parts of the brain

parts in blood

main parts of speech

parts of the nervous system

parts of nerve cells

parts of the catholic mass

parts of the duodenum

parts of a plant

parts of the neuron

forces of human evolution

forces of flight

psychological forces

tissue types

types of love…. agape, philia, storge, and eros

extraembryonic membranes

noble truths of Buddha

universal emotions

magical music chords

celestial animals
mysteries of the rosary

families of instruments

quarters of old Jerusalem

quarters of the Earth

poles of the sun