--- es_a.py-	2016-09-30 03:00:00.000000000 +0900
+++ es_a.py	2016-09-30 04:00:00.000000000 +0900
@@ -271,7 +271,7 @@ def tree_type(lst):
 		return step(e, 2)
 	return step(e, 1)
 
-def es_split(s):
+def es_split(s, verb):
 	s = s.replace('@', '@ ')
 
 	'''
@@ -356,10 +356,16 @@ def es_split(s):
 	lst = [ try_num_name(e, e[:2]) for e in lst ]
 
 	lst = join_type(None, lst)
+	if verb >= 4:
+		show_yaml(lst, 'join_type')
 
 	lst = tree_bra(lst, kdic)
+	if verb >= 4:
+		show_yaml(lst, 'tree_bra')
 
 	lst = name_bra(lst)
+	if verb >= 4:
+		show_yaml(lst, 'name_bra')
 
 	ops[0][2].append('[')  # !!!
 
@@ -831,12 +837,12 @@ if __name__ == "__main__":
 	else:
 		verb = 0
 		argv = sys.argv[:]
-		for (i, opt) in enumerate( [ '-v', '-vv', '-vvv' ] ):
+		for (i, opt) in enumerate( [ '-v', '-vv', '-vvv', '-vvvv' ] ):
 			if opt in argv:
 				argv.remove(opt)
 				verb = i + 1
 		s = load_src( argv[1] )
-		lst = es_split(s)
+		lst = es_split(s, verb)
 		if verb >= 3:
 			show_yaml(lst, 'lst')