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a{<}a
{||}{^}a{v}{^_}e{|}
{||}{^}{^_}a{<}{<}{>}a{||}
{^-}{^_}{->}a{|}{||}{^-}e
{^}{^}{^}{/}a{|}e {/}{/}a{||}
{^-}{^}{^_}{->}{<_}{w}{w}{w-}a