Test of partner swing.

sdr> trade ; trade and roll
|      3G>  3B<
| 
| 4Bv            2Gv
| 
| 4G^            2B^
| 
|      1B>  1G<
sdr> swing
|      3Gv  3Bv
| 
| 4B>            2G<
| 
| 4G>            2B<
| 
|      1B^  1G^
sdr> promenade home
|      3Gv  3Bv
| 
| 4B>            2G<
| 
| 4G>            2B<
| 
|      1B^  1G^
sdr> do half of a trade
|           3G>
| 
|           3B<
| 
| 4G^  4Bv       2B^  2Gv
| 
|           1B>
| 
|           1G<
sdr> right and left grand
|      1G>  1B<
| 
| 2Bv            4Gv
| 
| 2G^            4B^
| 
|      3B>  3G<
sdr> swing your partner
|      1Gv  1Bv
| 
| 2B>            4G<
| 
| 2G>            4B<
| 
|      3B^  3G^
sdr> promenade home
|      3Gv  3Bv
| 
| 4B>            2G<
| 
| 4G>            2B<
| 
|      1B^  1G^
sdr> heads lead right ; swing thru
| 3G>  2G>
| 
| 3B<  2B<
| 
| 4B>  1B>
| 
| 4G<  1G<
sdr> right and left grand
|      1BL       4GQ
| 
| 1G7                 4B`
| 
| 
| 
| 2BQ                 3GL
| 
|      2G`       3B7
sdr> partner swing
|           4G<
| 
| 1Gv  1Bv  4B<
| 
|      2B>  3B^  3G^
| 
|      2G>
sdr> promenade home
|      3Gv  3Bv
| 
| 4B>            2G<
| 
| 4G>            2B<
| 
|      1B^  1G^
sdr> /exit