Frequency - Word Form
   9 object
  10 objects
   3 obscure
   1 obscurely
   4 observation
   3 observations
   3 observe
  25 observed
   2 obtain
   4 obtains
   3 obvious
   1 obviously
   1 occasionally
   1 occupied
   1 occupies
  23 occur
   1 occurred
   1 occurrence
   1 occurring
  16 occurs
2633 of
  34 off
   1 offence
   1 offer
  52 offspring
  48 often
   9 oil
  34 old
   4 older
   1 oleaster
   1 olive
   1 olives
   1 omnivorous
 204 on
  22 once
 308 one
   3 one-coloured
   2 one-hoofed
  13 ones
   1 oneself
   1 onions
 205 only
   1 oozes
   6 open
   2 opened
   2 opening
   1 operation
   4 operations
   1 operative
   2 opinion
   1 opinions
   1 opportunity
   7 opposed
  39 opposite
   2 opposites
   1 oppositions
 469 or
   1 orbit
  12 order
   1 ordered
   1 ordering
   1 orders
   2 ordinary
  21 organ
   5 organic
   4 organism
   1 organisms
  17 organs
  15 origin
   9 original
   3 originally
   2 originated
   1 origins
   1 orpheus
   3 os
   1 ostrich
 250 other
 135 others
   8 otherwise
  18 ought
  11 our
  85 out
   2 outer
   1 outermost
   1 outgrowth
   3 outgrowths
   1 outlines
   1 outset
  30 outside
   1 outwards
   3 oven
  35 over
   1 over-filled
   1 overboil
   1 overflow
   1 overlap
   2 overlapping
   1 overlooked
  19 ovipara
  44 oviparous
   1 oviposit
   1 oviposition
   1 oviposits
   1 ovum
  21 owing
  28 own
   2 ox
   1 oxen
   1 oxide
   1 oyster
   4 oysters