(ordered by popularity)
own
such
best
strenuous
early
special
further
joint
recent
greater
successful
cooperative
concerted
serious
individual
educational
current
initial
heroic
desperate
earlier
vigorous
previous
future
international
collaborative
considerable
persistent
utmost
frantic
united
literary
diplomatic
conscious
unsuccessful
collective
past
reasonable
subsequent
intensive
creative
earnest
vain
extraordinary
extensive
untiring
futile
constant
ongoing
greatest
voluntary
earliest
systematic
feeble
missionary
promotional
organizational
sincere
tireless
fruitless
pioneering
continuous
valiant
deliberate
continued
legislative
violent
soviet
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