No | Pattern | Freq | Relations |
---|---|---|---|
1 | they must [vb infin] been [adj] and | 5 | |
2 | they must have been [adj] and | 5 | |
3 | they must [verb] been [adj] and | 5 | |
4 | they must [verb] been [adj] and | 5 | |
5 | they must have been [adj] and | 5 |
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