{
'/s$/i' => "",
'/(ss)$/i' => '\1',
'/(n)ews$/i' => '\1ews',
'/([ti])a$/i' => '\1um',
'/((a)naly|(b)a|(d)iagno|(p)arenthe|(p)rogno|(s)ynop|(t)he)(sis|ses)$/i' => '\1sis',
'/(^analy)(sis|ses)$/i' => '\1sis',
'/([^f])ves$/i' => '\1fe',
'/(hive)s$/i' => '\1',
'/(tive)s$/i' => '\1',
'/([lr])ves$/i' => '\1f',
'/([^aeiouy]|qu)ies$/i' => '\1y',
'/(s)eries$/i' => '\1eries',
'/(m)ovies$/i' => '\1ovie',
'/(x|ch|ss|sh)es$/i' => '\1',
'/^(m|l)ice$/i' => '\1ouse',-
'/(bus)(es)?$/i' => '\1',
'/(o)es$/i' => '\1',
'/(shoe)s$/i' => '\1',
'/(cris|test)(is|es)$/i' => '\1is',
'/^(a)x[ie]s$/i' => '\1xis',
'/(octop|vir)(us|i)$/i' => '\1us',
'/(alias|status)(es)?$/i' => '\1',
'/^(ox)en/i' => '\1',
'/(vert|ind)ices$/i' => '\1ex',
'/(matr)ices$/i' => '\1ix',
'/(quiz)zes$/i' => '\1',
'/(database)s$/i' => '\1'}