C1212121231123232233131323223313233313233313223313132313231331123331   >>    C121212123112323223313132322331323331323331322331313231323133112333   <<    C1212121231123232233131323223313233313233313223313132313231331123333   >>      C1212121231123232233131323223313233313233313223313132313231331123332   >>