The body needs it to use oxygen to produce energy.
(The body; needs; it to use oxygen to produce energy) Context(The body needs,List([0, 14))):(it; to use; oxygen; to produce energy) Context(The body needs it to use,List([0, 24))):(it; to use oxygen to produce; energy)
The body needs,List([0, 14)) The body needs it to use,List([0, 24))
The body it it
needs to use to use oxygen to produce
it to use oxygen to produce energy
oxygen to produce energy
energy