C13131221323331323131323132323213231323131323223313233313132313232233231   >>    C1313122132333132313132313232321323132313132322331323331313231323223323   <<    C13131221323331323131323132323213231323131323223313233313132313232233233   >>      C13131221323331323131323132323213231323131323223313233313132313232233232   >>