"s?$" = "s"
"[^\\u0000-\\u007F]$" = "$0"
"([^aeiou]ese)$" = "$1"
"(ax|test)is$" = "$1es"
"(alias|[^aou]us|t[lm]as|gas|ris)$" = "$1es"
"(e[mn]u)s?$" = "$1s"
"([^l]ias|[aeiou]las|[ejzr]as|[iu]am)$" = "$1"
"(alumn|syllab|vir|radi|nucle|fung|cact|stimul|termin|bacill|foc|uter|loc|strat)(?:us|i)$" = "$1i"
"(alumn|alg|vertebr)(?:a|ae)$" = "$1ae"
"(seraph|cherub)(?:im)?$" = "$1im"
"(her|at|gr)o$" = "$1oes"
"(agend|addend|millenni|dat|extrem|bacteri|desiderat|strat|candelabr|errat|ov|symposi|curricul|automat|quor)(?:a|um)$" = "$1a"
"(apheli|hyperbat|periheli|asyndet|noumen|phenomen|criteri|organ|prolegomen|hedr|automat)(?:a|on)$" = "$1a"
"sis$" = "ses"
"(?:(kni|wi|li)fe|(ar|l|ea|eo|oa|hoo)f)$" = "$1$2ves"
"([^aeiouy]|qu)y$" = "$1ies"
"([^ch][ieo][ln])ey$" = "$1ies"
"(x|ch|ss|sh|zz)$" = "$1es"
"(matr|cod|mur|sil|vert|ind|append)(?:ix|ex)$" = "$1ices"
"^((?:tit)?m|l)(?:ice|ouse)$" = "$1ice"
"(pe)(?:rson|ople)$" = "$1ople"
"(child)(?:ren)?$" = "$1ren"
"eaux$" = "$0"
"m[ae]n$" = "men"
"^thou$" = "you"