1B^   2BV   4G^   3GV
     
            1G^   2GV   4B^   3BV
     
           BOYS hinge
     
               1B>
                        4G^   3GV
               2B<
     
                           4B>
            1G^   2GV
                           3B<

and:

                3G>  4B>  4G>
            3B^               1BV
                2G<  2B<  1G<
     
           GIRLS hinge
     
                           4B>
            3B^  2G^  3GV       1G^  4GV  1BV
                           2B<

Sd understands moderately complex things:

                    4GV  3B^
            3GV 4B^          2BV 1G^
                    1BV  2G^
     
           BOYS IN YOUR DISTORTED WAVE swing thru
     
                    4GV  4B^
            3GV 1B^          3BV 1G^
                    2BV  2G^

and:

                  3BV
            2BV   3G^   4G^
            2GV   1GV   4B^
                  1B^
     
           swing thru
     
            3BV   2B^   4GV   3G^
     
            1GV   2G^   4BV   1B^

and:

                           3B>
            4G^   3GV
                           2B<
     
               4B>
                        1G^   2GV
               1B<
     
           BOYS START, swing the fractions
     
            1G^   2BV   2G^   3BV
     
            1B^   4GV   4B^   3GV

and:

              2B<  3B<
      3GV 2G^          4GV 1G^
              1B>  4B>
     
           IGNORE THE SIDE GIRLS, triangle circulate
     
              1B<  1G<
      2BV 2G^          4GV 4B^
              3G>  3B>

and:

                      4B>
                      1G<
            3B^ 4GV         2G^ 1BV
                      3G>
                      2B<
     
           GIRLS flip the diamond
     
                         4B>
     
            3B^  1GV  4G^  2GV  3G^  1BV
     
                         2B<

and even:

                      4B>
                      1G<
            3B^ 4GV         2G^ 1BV
                      3G>
                      2B<
     
           4 TIMES, CENTER DIAMOND, flip the diamond
     
                      1G>
                      4G<
            3B^ 4BV         2B^ 1BV
                      2G>
                      3G<

And of course Sd understands extremely complex things:

            4B>   4G>   1B>   1G>
     
            3G<   3B<   2G<   2B<
     
           INVERT SNAG, INVERT deuces wild
     
                    1B>  4G>
            3G^ 4BV          2B^ 1GV
                    2G<  3B<

and:

            4B>   4G>   1B>   1G>
     
            3G<   3B<   2G<   2B<
     
           RANDOM ONCE REMOVED, CENTRAL, lead the way
     
            1BV   4BV   1GV   4GV
     
            2G^   3G^   2B^   3B^

and:

         4B>                    2G<
             1B^  3GV  1G^  3BV
         4G>                    2B<
     
           ONCE REMOVED single wheel
     
             1BV            3G^
         4G<     4B<    2B>     2G>
             1GV            3B^