C131312213233313231313231323232132313231313232233132333131323331323223313231121   >>    C13131221323331323131323132323213231323131323223313233313132333132322331323112   <<    C131312213233313231313231323232132313231313232233132333131323331323223313231123   >>      C131312213233313231313231323232132313231313232233132333131323331323223313231122   >>