i'm thinking police ie lice but are lice river pests. i've got ??l?c. now my next clue is singular way to set in rows. i've got ??r?n?e. i'm thinking arrange or enrange or even derange. if police is correct then my last clue excuses heard will satisfy is p?e???. the middle question mark of the 3 qmarks would be either d,e, or a (depending on derange, enrange, or arrange. well compicated me thinks