$A_1=\{\{4\},\{5\},\{8\}\}A\_1=\; \backslash \{\; \backslash \{4\backslash \},\backslash \{5\backslash \},\backslash \{8\backslash \}\backslash \}$

$A_2=\{\{4\},\{\mathrm{5,8}\}\}A\_2=\backslash \{\; \backslash \{4\backslash \},\backslash \{5\{,\}8\backslash \}\backslash \}$

$A_3=\{\{\mathrm{4,5}\},\{8\}\}A\_3=\; \backslash \{\backslash \{4\{,\}5\backslash \},\backslash \{8\backslash \}\backslash \}$

$A_4=\{\{\mathrm{4,8}\},\{5\}\}A\_4\; =\; \backslash \{\; \backslash \{4\{,\}8\backslash \},\backslash \{5\backslash \}\backslash \}$

$A_5=\{\{\mathrm{4,5},8\}\}A\_5\; =\; \backslash \{\; \backslash \{4\{,\}5,8\backslash \}\backslash \}$