(ordered by popularity)
foreign
international
extensive
free
long
much
european
distance
overseas
constant
interstate
domestic
modern
interplanetary
recent
personal
safe
further
total
unlimited
interstellar
frequent
rapid
hard
astral
class
independent
time
easy
commercial
optional
actual
urban
daily
african
longer
light
cheap
slow
transatlantic
country
wide
vertical
global
ordinary
continuous
less
related
continental
regular
sound
eastern
necessary
fast
recreational
maximum
extended
official
educational
forward
ocean
speed
unnecessary
distant
difficult
rough
east
horizontal
comfortable
vehicular
easier
arduous
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