Elementary entities like "a" exist as single object

[Aster89]

https://github.com/sarabander/p2pu-sicp/blob/fbc49b67dac717da1487629fb2d7a7d86dfdbe32/3.3/3.14.scm#L27

The book mentions (at footnote 19, page 257) that the "objects" a, b, and so on, are shared. so technically v should point at the last pair of w, I believe.