'atlas' => 'atlases',
'axe' => 'axes',
'beef' => 'beefs',
'brother' => 'brothers',
'cafe' => 'cafes',
'canvas' => 'canvases',
'chateau' => 'chateaux',
'niveau' => 'niveaux',
'child' => 'children',
'cookie' => 'cookies',
'corpus' => 'corpuses',
'cow' => 'cows',
'criterion' => 'criteria',
'curriculum' => 'curricula',
'demo' => 'demos',
'domino' => 'dominoes',
'echo' => 'echoes',
'foot' => 'feet',
'fungus' => 'fungi',
'ganglion' => 'ganglions',
'gas' => 'gases',
'genie' => 'genies',
'genus' => 'genera',
'goose' => 'geese',
'graffito' => 'graffiti',
'hippopotamus' => 'hippopotami',
'hoof' => 'hoofs',
'human' => 'humans',
'iris' => 'irises',
'larva' => 'larvae',
'leaf' => 'leaves',
'loaf' => 'loaves',
'man' => 'men',
'medium' => 'media',
'memorandum' => 'memoranda',
'money' => 'monies',
'mongoose' => 'mongooses',
'motto' => 'mottoes',
'move' => 'moves',
'mythos' => 'mythoi',
'niche' => 'niches',
'nucleus' => 'nuclei',
'numen' => 'numina',
'occiput' => 'occiputs',
'octopus' => 'octopuses',
'opus' => 'opuses',
'ox' => 'oxen',
'passerby' => 'passersby',
'penis' => 'penises',
'person' => 'people',
'plateau' => 'plateaux',
'runner-up' => 'runners-up',
'sex' => 'sexes',
'soliloquy' => 'soliloquies',
'son-in-law' => 'sons-in-law',
'syllabus' => 'syllabi',
'testis' => 'testes',
'thief' => 'thieves',
'tooth' => 'teeth',
'tornado' => 'tornadoes',
'trilby' => 'trilbys',
'turf' => 'turfs',
'valve' => 'valves',
'volcano' => 'volcanoes',

'/(s)tatus$/i' => '\1\2tatuses',
'/(quiz)$/i' => '\1zes',
'/^(ox)$/i' => '\1\2en',
'/([m|l])ouse$/i' => '\1ice',
'/(matr|vert|ind)(ix|ex)$/i' => '\1ices',
'/(x|ch|ss|sh)$/i' => '\1es',
'/([^aeiouy]|qu)y$/i' => '\1ies',
'/(hive|gulf)$/i' => '\1s',
'/(?:([^f])fe|([lr])f)$/i' => '\1\2ves',
'/sis$/i' => 'ses',
'/([ti])um$/i' => '\1a',
'/(c)riterion$/i' => '\1riteria',
'/(p)erson$/i' => '\1eople',
'/(m)an$/i' => '\1en',
'/(c)hild$/i' => '\1hildren',
'/(f)oot$/i' => '\1eet',
'/(buffal|her|potat|tomat|volcan)o$/i' => '\1\2oes',
'/(alumn|bacill|cact|foc|fung|nucle|radi|stimul|syllab|termin|vir)us$/i' => '\1i',
'/us$/i' => 'uses',
'/(alias)$/i' => '\1es',
'/(analys|ax|cris|test|thes)is$/i' => '\1es',
'/s$/' => 's',
'/^$/' => '',
'/$/' => 's',