C1212121231123232233131323223313231231232313232213231323132313231323331121   >>    C121212123112323223313132322331323123123231323221323132313231323132333112   <<    C1212121231123232233131323223313231231232313232213231323132313231323331123   >>      C1212121231123232233131323223313231231232313232213231323132313231323331122   >>