n. sol fa
sol faist
sol fa syllables
tonic sol fa
Costa del Sol
every so often
and so on
and so forth
even so
so far
so help me
so long
say so
so as to
so and so
so and so's
so and sos
so called
so far as
so long as
so many
so much
so much as
so so
so that
in so many words
und so weiter