# subj-verb agr

they laugh. (1 0.10 19)

they laughs. (0! *1 0.04 29)

# missing determiner

girl laughs. (0! *1 0.05 27)

# ending punctuation

they laugh (1 0.04 17)

they laugh.  (1 0.03 19)

who laughs? (1 0.03 15)

who laughs (1 0.03 13)


# pos tagging and labelled bracketing

happy boys laughed and laughed. (2 0.16 144)

[LAB-NP happy  girls] laughed. (2 0.05 42)

happy POS-A girls laughed. (1 0.04 28)

# adverb placement

quickly they laugh. (1 0.05 24)

they quickly laugh. (1 0.04 24)

they laugh quickly. (1 0.04 24)

# 13 sentences, 0.70 CPU secs total, 0.16 CPU secs max (03/03/04)