C1212121231123232233131323223313233313233313223313233231323222331   >>    C121212123112323223313132322331323331323331322331323323132322233   <<    C1212121231123232233131323223313233313233313223313233231323222333   >>      C1212121231123232233131323223313233313233313223313233231323222332   >>