C131312213233313231313231323232132313231313232233132333132212231   >>    C13131221323331323131323132323213231323131323223313233313221223   <<    C131312213233313231313231323232132313231313232233132333132212233   >>      C131312213233313231313231323232132313231313232233132333132212232   >>