 The main four groups of dialects are the Bohemian-Moravian group, the Central Moravian group, the Eastern Moravian group and the Lach (Silesian) group (which is also spoken in Czech Silesia).While the forms are generally viewed as regional variants of Czech, some Moravians (108,469 in the 2011 Census) claim them to be one separate Moravian language.Southeastern Moravian dialects form a dialect continuum with the closely related Slovak language, and are thus sometimes viewed as dialects of Slovak rather than Czech.