What are the $IUPAC$ nomenclature rules for naming alkenes?

(N/A) $i$. Select the longest carbon chain that contains the carbon-carbon double bond.
$ii$. Number the chain starting from the end that gives the double-bonded carbons the lowest possible locants.
$iii$. Replace the suffix $-ane$ of the corresponding alkane with $-ene$ to indicate the presence of a double bond.
$iv$. If there is more than one double bond,use prefixes like $diene$,$triene$,or $tetraene$ and indicate the position of each double bond.
$v$. For substituted alkenes,identify and name the substituents alphabetically,including their position numbers,following the standard $IUPAC$ rules for alkanes.