TEXT LENGTH
PERIOD OF DUTY   14
PERIOD OF ECONOMIC GROWTH   25
PERIOD OF EXISTENCE   19
PERIOD OF FASTING   17
PERIOD OF FIVE YEARS   20
PERIOD OF FORGIVENESS   21
PERIOD OF FUTURE BLISS   22
PERIOD OF GREAT POPULARITY   26
PERIOD OF GREATEST SUCCESS   26
PERIOD OF GROWTH   16
PERIOD OF HISTORIC TIME   23
PERIOD OF HISTORY   17
PERIOD OF HOLDING   17
PERIOD OF IMMATURITY   20
PERIOD OF INACTIVITY   20
PERIOD OF INDULGENCE   20
PERIOD OF INSTRUCTION   21
PERIOD OF MAJOR FIGHTING   24
PERIOD OF NOTABLE EVENTS   24
PERIOD OF NOTE   14
PERIOD OF OCCUPANCY   19
PERIOD OF OFFICE   16
PERIOD OF ONE THOUSAND YEARS   28
PERIOD OF ONE'S GREATEST PRODUCTIVITY   37
PERIOD OF ONE'S PRIME   21
PERIOD OF PENITENCE   19
PERIOD OF PETITIONING   21
PERIOD OF POWER   15
PERIOD OF PRAYER   16
PERIOD OF PREGNANCY   19
PERIOD OF PROSPERITY   20
PERIOD OF QUIET   15
PERIOD OF RAPID GROWTH   22
PERIOD OF RELIEF   16
PERIOD OF REST   14
PERIOD OF REVOLUTION?   21
PERIOD OF RULE   14
PERIOD OF SELF-INDULGENCE   25
PERIOD OF SERVICE   17
PERIOD OF SICKNESS   18
PERIOD OF SLEEP WITH DREAMING   29
PERIOD OF TEN YEARS   19
PERIOD OF THE CENOZOIC ERA   26
PERIOD OF THE FIRST DINOSAURS   29
PERIOD OF THOUSAND YEARS   24
PERIOD OF THREE YEARS   21
PERIOD OF TIME   14
PERIOD OF TIME BETWEEN EVENTS   29
PERIOD OF TIME IN HISTORY   25
PERIOD OF TIME IN PRISON   24
PERIOD OF UNCERTAINTY   21
PERIOD OF WATCHFUL ATTENTION   28
PERIOD OF WATCHFULNESS   22
PERIOD OF WATCHING   18
PERIOD OF WOOING   16
PERIOD OF WORK   14
PERIOD OF YEAR   14
PERIOD OF YEARS   15
PERIOD ON THE THRONE   20
PERIOD PIECE   12
PERIOD PIECES   13
PERIOD REVOLUTION   17
PERIOD SYMPTOM   14
PERIOD TIME   11
PERIOD TO REMEMBER   18
PERIOD TOO LONG TO MEASURE   26
PERIOD WHEN HORSES FIRST APPEARED   33
PERIOD WITH A NAME   18
PERIOD WITH LIMITS   18
PERIOD'S PLACE   14
PERIOD, FOR ONE   15
PERIOD, IN WEB ADDRESSES   24
PERIOD, WITH 'THE'   18
PERIODIC   8
PERIODIC FUNCTION   17
PERIODIC MAINTENANCE   20
PERIODIC PAY   12
PERIODIC PAYEE   14
PERIODIC PAYMENT   16
PERIODIC PAYMENTS   17
PERIODIC TABLE ENTRY   20
PERIODIC TABLE ITEM   19
PERIODIC TABLE ITEMS   20
PERIODIC TABLE LISTING   22
PERIODIC TABLE LISTINGS   23
PERIODIC-TABLE COMPONENT   24
PERIODIC-TABLE ENTRIES   22
PERIODICAL   10
PERIODICAL BULLETIN   19
PERIODICAL FIGURE   17
PERIODICAL NUMBER   17
PERIODICAL PLEA   15
PERIODICAL POPULATION COUNT   27
PERIODICAL PUBLICATION   22
PERIODICAL PUBLISHER   20
PERIODICAL SEQUENCE   19
PERIODICAL VIPS   15
PERIODICAL, BRIEFLLY   20
PERIODICAL, BRIEFLY   19
PERIODICAL, FOR SHORT   21
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