--- es_f.py-	2016-10-03 00:00:00.000000000 +0900
+++ es_f.py	2016-10-04 00:00:00.000000000 +0900
@@ -383,10 +383,16 @@ def es_split(s, verb):
 	ops[0][2].append('[')  # !!!
 
 	lst = tree_op(lst, ops)
+	if verb >= 4:
+		show_yaml(lst, 'tree_op')
 
 	lst = tree_kwd(lst, kdic)
+	if verb >= 4:
+		show_yaml(lst, 'tree_kwd')
 
 	lst = tree_type(lst)
+	if verb >= 4:
+		show_yaml(lst, 'tree_type')
 
 	return lst