They usually dig deep burrows into grassy banks to form their nests and to protect against land based predators.
(They; dig; deep burrows; into grassy banks; to form their nests and to protect against land based predators; T:usually) Context(They dig,List([0, 16))):(They; dig deep burrows to form; their nests)
They dig,List([0, 16))
They They
dig dig deep burrows to form
deep burrows into grassy banks to form their nests and to protect against land based predators T:usually
their nests