ofermod finds
all words with the sequence of letters "ofermod"
in them.
g(.{1,3}ld finds words containing the letters g and ld with a minimum of one and
a maximum of three other letters intervening. For example, it finds "geld", "gield",
and "gyld". Note the curly braces
ode\b finds words ending with the letters ode. It finds "mode", "gode",
and "werode"