7222M with SV-4B engine. 7222E with SV-4B engine, produced from 1/1991 to 8/1997. 7924 with SV-5CI/2 engine, produced from Aug 2014 to date. 7222 with SV-4B1E engine, produced from 8/1997 to 12/2000. 7222 with SV-4B1E engine, produced from 1/2001 to 1/2003.
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