Field 3: STR vs BAS:
STR differs from BAS only in the negative forms of auxiliaries and modals.The following are the only lines on which STR and BAS differ:
E0012152|be|aren't|aux|negative|
E0012152|be|isn't|aux|negative|
E0012152|be|wasn't|aux|negative|
E0012152|be|weren't|aux|negative|
E0014877|can|can't|modal|negative|
E0014877|can|couldn't|modal|negative|
E0020796|dare|daren't|modal|negative|
E0023651|do|didn't|aux|negative|
E0023651|do|doesn't|aux|negative|
E0023651|do|don't|aux|negative|
E0030899|have|hadn't|aux|negative|
E0030899|have|hasn't|aux|negative|
E0030899|have|haven't|aux|negative|
E0039142|may|mayn't|modal|negative|
E0039142|may|mightn't|modal|negative|
E0041474|must|mustn't|modal|negative|
E0044483|ought|oughtn't|modal|negative|
E0055547|shall|shan't|modal|negative|
E0055547|shall|shouldn't|modal|negative|
E0065450|will|won't|modal|negative|
E0065450|will|wouldn't|modal|negative|
Field 5: FEA
The features are stative, proper, interrogative, demonstrative,
negative and broad_negative. They are each discussed below: