C131312213233313231313231323232132313231313232233132333132313233211111221   >>    C13131221323331323131323132323213231323131323223313233313231323321111122   <<    C131312213233313231313231323232132313231313232233132333132313233211111223   >>      C131312213233313231313231323232132313231313232233132333132313233211111222   >>