C1212121231123232233131323223313233313233313223313231323132313123131   >>    C121212123112323223313132322331323331323331322331323132313231312313   <<    C1212121231123232233131323223313233313233313223313231323132313123133   >>      C1212121231123232233131323223313233313233313223313231323132313123132   >>