!!!L2 Syntactic Complexity Analyzer
http://www.personal.psu.edu/xxl13/downloads/l2sca.html
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!9 structures in the text: 
+words (W)
+sentences (S)
+verb phrases (VP)
+clauses (C)
+T-units (T)
+dependent clauses (DC)
+complex T-units (CT)
+coordinate phrases (CP)
+complex nominals (CN)

!14 syntactic complexity indices of the text: 
+mean length of sentence (MLS)
+mean length of T-unit (MLT
+mean length of clause (MLC)
+clauses per sentence (C/S)
+verb phrases per T-unit (VP/T)
+clauses per T-unit (C/T)
+dependent clauses per clause (DC/C)
+dependent clauses per T-unit (DC/T)
+T-units per sentence (T/S)
+complex T-unit ratio (CT/T)
+coordinate phrases per T-unit (CP/T)
+coordinate phrases per clause (CP/C)
+complex nominals per T-unit (CN/T)
+complex nominals per clause (CN/C)