Did they note that the eggs developed into tadpoles, that the tadpoles developed legs, their tails became shorter and disappeared, and finally became frogs?
(the eggs developed into tadpoles; became; frogs; T:finally) (the eggs; developed; into tadpoles) (their tails; disappeared; )
the eggs developed into tadpoles the eggs their tails
became developed disappeared
frogs T:finally
into tadpoles