C1212121231123232233131323223313231333132322113313231323331323113121   >>    C121212123112323223313132322331323133313232211331323132333132311312   <<    C1212121231123232233131323223313231333132322113313231323331323113123   >>      C1212121231123232233131323223313231333132322113313231323331323113122   >>