Kemija - 2023. ljeto, 7.

$(\mathrm{g})\to (\mathrm{s})(\backslash mathrm\{g\})\; \backslash rightarrow(\backslash mathrm\{s\})$

$(\mathrm{s})\to (\mathrm{g})(\backslash mathrm\{s\})\; \backslash rightarrow(\backslash mathrm\{g\})$

$(\mathrm{s})\to (\mathrm{\ell })(\backslash mathrm\{s\})\; \backslash rightarrow(\backslash ell)$

$(\mathrm{\ell })\to (\mathrm{g})(\backslash ell)\; \backslash rightarrow(\backslash mathrm\{g\})$