--- /dev/null
+{ {{em strong <textwheel1|block>}} }
+
+{{ {em strong <textwheel1|block>} strong <textwheel1|block>}}
+
+{{strong <textwheel1|block> {em strong <textwheel1|block>} }}
+
+{{strong {em strong <textwheel1|block>} strong <textwheel1|block>}}