C13131221323331323131323132323213231323131323223313233313231133132323323111   >>    C1313122132333132313132313232321323132313132322331323331323113313232332311   <<    C13131221323331323131323132323213231323131323223313233313231133132323323113   >>      C13131221323331323131323132323213231323131323223313233313231133132323323112   >>