- assert_equal('[[<+,U+002B>, <A,U+0041>, <B,U+0042>]]', IDS_Tree.new("+AB").inspect)
- assert_equal('[[<+,U+002B>, <A,U+0041>, <B,U+0042>], <C,U+0043>]', IDS_Tree.new("+ABC").inspect)
- assert_equal('[[<+,U+002B>, <A,U+0041>, [<+,U+002B>, <B,U+0042>, <C,U+0043>]]]', IDS_Tree.new("+A+BC").inspect)
- assert_equal('[[<+,U+002B>, <A,U+0041>, [<+,U+002B>, <B,U+0042>, <C,U+0043>]], <D,U+0044>]', IDS_Tree.new("+A+BCD").inspect)
+# assert_equal('[[<+,U+002B>, <A,U+0041>, <B,U+0042>]]', IDS_Tree.new("+AB").inspect)
+# assert_equal('[[<+,U+002B>, <A,U+0041>, <B,U+0042>], <C,U+0043>]', IDS_Tree.new("+ABC").inspect)
+# assert_equal('[[<+,U+002B>, <A,U+0041>, [<+,U+002B>, <B,U+0042>, <C,U+0043>]]]', IDS_Tree.new("+A+BC").inspect)
+# assert_equal('[[<+,U+002B>, <A,U+0041>, [<+,U+002B>, <B,U+0042>, <C,U+0043>]], <D,U+0044>]', IDS_Tree.new("+A+BCD").inspect)