Some coast have a mixed cycle where the daily two high and low tides have different magnitudes.
(Some coast; have; a mixed cycle where the daily two high and low tides have different magnitudes) (the daily two high and low tides; have; different magnitudes; L:a mixed cycle)
Some coast the daily two high and low tides
have have
a mixed cycle where the daily two high and low tides have different magnitudes
different magnitudes L:a mixed cycle