C1212121231123232233131323223313231333132322113313231333131232333131   >>    C121212123112323223313132322331323133313232211331323133313123233313   <<    C1212121231123232233131323223313231333132322113313231333131232333133   >>      C1212121231123232233131323223313231333132322113313231333131232333132   >>