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| could not help knowing (He certainly knew the value of the gold coin. If he's in the business he couldn't help knowing. ART Vancouver) | |||
| could not have been unaware (Khrushchov); could not fail to be aware (Incognita) | |||
| не мог не знать: 38 phrases in 10 subjects |
| American usage, not spelling | 1 |
| General | 17 |
| Literature | 1 |
| Makarov | 8 |
| Mass media | 4 |
| Obsolete / dated | 1 |
| Philosophy | 2 |
| Programming | 2 |
| Quotes and aphorisms | 1 |
| Scientific | 1 |