As these plants died, their remains fell into the water and were only partly decomposed.
(these plants; died; ) (their remains; fell; into the water; T:As these plants died) (their remains; were; only partly decomposed; T:As these plants died) (their remains; only partly decomposed; )
these plants their remains their remains their remains
died fell were only partly decomposed
into the water T:As these plants died
only partly decomposed T:As these plants died