the water expands when it freezes and forces the crack to enlarge.
(the water; expands; T:when it freezes and forces the crack to enlarge) (it; freezes; ) (it; forces; the crack; to enlarge) (the crack; to enlarge; )
the water it it the crack
expands freezes forces to enlarge
T:when it freezes and forces the crack to enlarge
the crack to enlarge