If you can find something that will provide a part of a shelter such as a hollow log, then use it as the basis of your shelter, this will save time and energy.
(you; can find; something that will provide a part of a shelter such as a hollow log, then use it as the basis of your shelter) (something; will provide then; a part of a shelter) (this; will save; time and energy)
you something this
can find will provide then will save
something that will provide a part of a shelter such as a hollow log, then use it as the basis of your shelter
a part of a shelter
time and energy