Trades, down the line and t-boned.

sdr> /program = Program.PLUS ; setFormation(Formation.SQUARED_SET)
|      3Gv  3Bv
| 
| 4B>            2G<
| 
| 4G>            2B<
| 
|      1B^  1G^
sdr> heads lead right ; extend
| 4B>  1B>
| 
| 3G<  2G<
| 
| 4G>  1G>
| 
| 3B<  2B<
sdr> boys trade
| 3B>  2B>
| 
| 3G<  2G<
| 
| 4G>  1G>
| 
| 4B<  1B<
sdr> girls trade
| 3B>  2B>
| 
| 4G<  1G<
| 
| 3G>  2G>
| 
| 4B<  1B<
sdr> /// hack to get into a formation to test t-boned trades down the line
sdr> /f = ds.currentFormation() ; undefined
sdr> /SD = StandardDancer.values(); undefined
sdr> /f = f.mapStd([SD[7],SD[1],SD[4],SD[2],SD[5],SD[3],SD[6],SD[0]]) ; f.toStringDiagram()
4G>  1G>

3B<  2B<

3G>  2G>

4B<  1B<
sdr> /for (i=0; i<8; i+=2) {
   >   f = f.move(SD[i], f.location(SD[i]).turn(net.cscott.sdr.util.Fraction.ONE_QUARTER, false));
   > } ; setFormation(f)
| 4G>  1G>
| 
| 3B^  2B^
| 
| 3G>  2G>
| 
| 4B^  1B^
sdr> girls trade
| 3G<  2G<
| 
| 3B^  2B^
| 
| 4G<  1G<
| 
| 4B^  1B^
sdr> girls trade down the line
| 4G>  1G>
| 
| 3B^  2B^
| 
| 3G>  2G>
| 
| 4B^  1B^
sdr> /// XXX: head girls run, and then try more t-boned trades
sdr> /exit