North Hills Inc. sells an Xpert snowshoe that is popular with snowshoe enthusiasts. The following information shows North Hills's purchases and sales of Xpert snowshoes during November: Prepare journal entries to record purchases and sales for North Hills in a periodic inventory system using average cost. (List all debit entries before credit entries. Credit account titles are automatically indented when the amount is entered. Do not indent manually. If no entry is required, select "No Entry" for the account titles and enter O for the amounts.)