A womans menstrual cycle can vary in length, but is usually about 29 days (which coincides with a lunar month).
(A womans menstrual cycle; can vary; ) (A womans menstrual cycle; is; T:usually; about 29 days (which coincides with a lunar month) (about 29 days; coincides; )
A womans menstrual cycle A womans menstrual cycle about 29 days
can vary is coincides
T:usually about 29 days (which coincides with a lunar month