C1212121231123232233131323223313233313233313211232313231323132333131   >>    C121212123112323223313132322331323331323331321123231323132313233313   <<    C1212121231123232233131323223313233313233313211232313231323132333133   >>      C1212121231123232233131323223313233313233313211232313231323132333132   >>