h><td><pre>b c -> a</pre></td></tr>
	<tr><th>halve</th><td><pre>a a -> a</pre></td></tr>
	<tr><th colspan='2'>Movers</th></tr>
	<tr><th>move</th><td><pre>a -> b</pre></td></tr>
		<tr><th>ring(blink)</th><td><pre>a -> b
b -> a</pre></td></tr>
	<tr><th>ring</th><td><pre>a -> b
b -> c
c -> a</pre></td></tr>
	<tr><th colspan='2'>Growers</th></tr>
	<tr><th>duplicate</th><td><pre>a -> a a</pre></td></tr>
	<tr><th>double</th><td><pre>a -> b b</pre></td></tr>
	<tr><th>fork</th><td><pre>a -> b c</pre></td></tr>
</ta