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Top 10 weighted unigrams and bigrams for r/birthcontrol posts based on Term Frequency-Inverse Document Frequency analysis among posts with flairs applied (February 4, 2016 to December 31, 2020; total posts N=68,824).
| Rank | Unigram | Bigram |
| 1 | Pill | Birth control |
| 2 | Period | Take pill |
| 3 | Day | Feel like |
| 4 | Take | Copper IUDa |
| 5 | Week | Control pill |
| 6 | Get | Week ago |
| 7 | Month | Unprotected sex |
| 8 | Start | Get period |
| 9 | IUD | Day period |
| 10 | Bleed | Month ago |
aIUD: intrauterine device.
