Each retains the same position relative to all others, but like the sun and the moon, they appear to rise in the east and set in the west.
(Each; retains; the same position relative to all others) (they; appear; ) (they; to rise; L:in the east) (they; to set; in the west)
Each they they they
retains appear to rise to set
the same position relative to all others
L:in the east
in the west