Bogs often form in the holes created by melting blocks of ice left by receding glaciers.
(Bogs; form; L:in the holes; T:often) (the holes; created; by melting blocks of ice) (blocks of ice; left; by receding glaciers)
Bogs the holes blocks of ice
form created left
L:in the holes T:often
by melting blocks of ice
by receding glaciers