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не исключено, что stresses
gen.	the possibility could not be excluded that (freelance_trans); there is a good chance that (источник – goo.gl)
Игорь Миг	it is not unthinkable that
econ.	it is not implausible that (A.Rezvov)
inf.	maybe (Pickman)
law	it cannot be ruled out that (Leonid Dzhepko)
math.	it is not improbable that; it is not inconceivable that
polit.	it may happen that (bigmaxus)
scient.	it is not unlikely; it is not unlikely that

не исключено, что: 18 phrases in 4 subjects

General	11
Literature	1
Makarov	4
Scientific	2