((from|from)*,?|(from|from),?)

((from)|(FROM)),?

(((from)|(FROM))|((from)|(FROM))?,*)

(\s*((from)|(FROM))+)|(((from)|(FROM))*,)

(((from)|(FROM))).*,.*,.*

(((from)|(FROM))).*,.*,.+ ==== 2 or more comma's

(((from)|(FROM))).*,.+  ==== 1 or more comma's

(((from tbl)|(FROM tbl))).*,.+ ==== 1 or more comma's

,.*(tbl|qry) ==== changed to include views and proceeded by 1 or more comma's