21.   Most, with little education and few skills, resort to the underground economy, commit new crimes and are soon rearrested.

22.   No one knows exactly how large the underground economy is, but all agree that the cash exchanged under the table is substantial.

23.   Nor does it tackle the problem of income from the underground economy, presumably a major source of sustenance for the very poor.

24.   Russians also operate in an underground economy based on cash -- mainly U.S. dollars -- not recorded by government statisticians.

25.   Some work in the underground economy.

26.   Some, working in the underground economy, pay no social-security or income tax.

27.   That brought many Hispanic people out of the underground economy into the official work force.

28.   The collapsed underground economy is only the visible face of the quicksand where the more one struggles to get out, the deeper one sinks.

29.   The gross domestic product does not count a truly vast underground economy that is slowly emerging as business conditions improve and tax laws become rational.

30.   The new president also wants to tap the so-called underground economy instead of shutting it down.