C1212121231123232233131323223313231333132322133313231312323132331   >>    C121212123112323223313132322331323133313232213331323131232313233   <<    C1212121231123232233131323223313231333132322133313231312323132333   >>      C1212121231123232233131323223313231333132322133313231312323132332   >>