: 2 terms
@#@
: 3 terms 0 pair
@#@#@
: 3 terms 1 pair
<@#@>#@,@#<@#@>
: 4 terms 0 pair
@#@#@#@
: 4 terms 1 pair
<@#@>#@#@,@#<@#@>#@,@#@#<@#@>,<@#@#@>#@,@#<@#@#@>
: 4 terms 2 pair
<@#@>#<@#@>,<<@#@>#@>#@,@#<<@#@>#@>,<@#<@#@>>#@,@#<@#<@#@>>
: 5 terms 0 pair
@#@#@#@#@
: 5 terms 1 pair
<@#@>#@#@#@,@#<@#@>#@#@,@#@#<@#@>#@,@#@#@#<@#@>,
<@#@#@>#@#@,@#<@#@#@>#@,@#@#<@#@#@>,
<@#@#@#@>#@,@#<@#@#@#@>
: 5 terms 2 pair
<@#@>#<@#@>#@,<@#@>#@#<@#@>,@#<@#@>#<@#@>,
<@#@>@<@#@#@>,<@#@#@>#<@#@>,
<<@#@>#@>#@#@,@#<<@#@>#@>#@,@#@#<<@#@>#@>,
<@#<@#@>>#@#@,@#<@#<@#@>>#@,@#@#<@#<@#@>>,
<<@#@>#@#@>#@,@#<<@#@>#@#@>,
<@#<@#@>#@>#@,@#<@#<@#@>#@>,
<@#@#<@#@>>#@,@#<@#@#<@#@>>,
<<@#@#@>#@>#@,@#<<@#@#@>#@>,
<@#<@#@#@>>#@,@#<@#<@#@#@>>
: 5 terms 3 pair
<@#@>#<<@#@>#@>,<<@#@>#@>#<@#@>,
<@#@>#<@#<@#@>>,<@#<@#@>>#<@#@>,
<<@#@>#<@#@>>#@,@#<<@#@>#<@#@>>,
<<<@#@>#@>#@>#@,@#<<<@#@>#@>#@>,<@#<<@#@>#@>>#@,@#<@#<<@#@>#@>>,
<<@#<@#@>>#@>#@,@#<<@#<@#@>>#@>,<@#<@#<@#@>>>#@,@#<@#<@#<@#@>>>
: 6 terms 0 pair
@#@#@#@#@#@
: 6 terms 1 pair
<@#@>#@#@#@#@,@#<@#@>#@#@#@,@#@#<@#@>#@#@,@#@#@#<@#@>#@,@#@#@#@#<@#@>,
<@#@#@>#@#@#@,@#<@#@#@>#@#@,@#@#<@#@#@>#@,@#@#@#<@#@#@>,
<@#@#@#@>#@#@,@#<@#@#@#@>#@,@#@#<@#@#@#@>,
<@#@#@#@#@>#@,@#<@#@#@#@#@>
: 7 terms 0 pair
@#@#@#@#@#@#@
: 8 terms 0 pair
@#@#@#@#@#@#@#@

