Kemija - 2011./12. jesen - 12.

${\mathrm{C}}_{\mathrm{n}}{\mathrm{H}}_{2\mathrm{n}-2}\backslash mathrm\{C\}\_\{\backslash mathrm\{n\}\}\; \backslash mathrm\{H\}\_\{2\; \backslash mathrm\{n\}-2\}$

${\mathrm{C}}_{\mathrm{n}}{\mathrm{H}}_{\mathrm{n}-6}\backslash mathrm\{C\}\_\{\backslash mathrm\{n\}\}\; \backslash mathrm\{H\}\_\{\backslash mathrm\{n\}-6\}$

${\mathrm{C}}_{\mathrm{n}}{\mathrm{H}}_{2\mathrm{n}-6}\backslash mathrm\{C\}\_\{\backslash mathrm\{n\}\}\; \backslash mathrm\{H\}\_\{2\; \backslash mathrm\{n\}-6\}$

${\mathrm{C}}_{\mathrm{n}}{\mathrm{H}}_{\mathrm{n}}\backslash mathrm\{C\}\_\{\backslash mathrm\{n\}\}\; \backslash mathrm\{H\}\_\{\backslash mathrm\{n\}\}$