C1212121231123232233131323223313233313233313223313132333132313113311331   >>    C121212123112323223313132322331323331323331322331313233313231311331133   <<    C1212121231123232233131323223313233313233313223313132333132313113311333   >>      C1212121231123232233131323223313233313233313223313132333132313113311332   >>