The child overgeneralizes the apparent rule of adding -s to form plurals and will talk about foots and mans. When the alternative pronunciation of the plural morpheme used in houses (i.e. ending in [-əz]) comes into use, it too is given an overgeneralized application and forms such as boyses or footses can be heard. At the same time as this overgeneralization is taking place, some children also begin using irregular plurals such as men quite appropriately for a while, but then try out the general rule on the forms, producing expressions like some mens and two feets, or even two feetses.