Specific regular expression

Hello there,
 
can any one help me with regex, which has to be:
original regex that i have: [a-zA-ZürdlšctzýáíéóúänôeuRDLŠCTZÝÁÉÍÚNÔÓ]+
need to edit it with:
it will not start with Y and y, and will not contain character W and w
 
thx for any help
cheers
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