The spring force is a conservative force, as long as we can ignore the energy lost to internal friction and heating of the spring.
(The spring force; is as long; a conservative force) (we; can ignore; the energy lost to internal friction and heating of the spring) (the energy; lost; to internal friction and heating of the spring)
The spring force we the energy
is as long can ignore lost
a conservative force
the energy lost to internal friction and heating of the spring
to internal friction and heating of the spring