The historical palatalized forms of some consonants have developed in Polish into noticeably different sounds: historical palatalized "t, d, r" have become the sounds now represented by "ć, dź, rz" respectively. Similarly palatalized "s, z, n" became the sounds "ś, ź, ń". The palatalization of labials has resulted (according to the main phonological analysis given in the sections above) in the addition of , as in the example "pies" just given. These developments are reflected in some regular morphological changes in Polish grammar, such as in noun declension.