Example sentences of "[adv] [pers pn] be [noun] [noun] four " in BNC.
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1 | So it 's N H four O H |
2 | and so 's N H four so it 's N H four C L. |
3 | So it 's N H four |
4 | Er whoa whoa whoa now it 's N H four right |
5 | N H three on its own ammonia when it 's combined with something else it 's N H four ion and it 's ammonium . |