Focke-Wulf Fw 44 Stieglitz - an overview of the versions:
Fw 44 and - biplane training aircraft with an engine Siemens-Halske Sh 14A, 2 prototypes
Fw 44 B - a slightly modified version with a longer fuselage, small series
Fw 44 C - conversion with an engine Argus As 8 B, 1 pcs
Fw 44 D - the main serial variant with an engine Siemens-Halske Sh 14 And
Fw 44 E - a modified version with an engine Argus As 8 B, approx 20 pcs
Fw 44 F - a slightly modified version with the engine Bramo Sh 14 A, marker lights, landing lights, a small storage space behind the seats; a small series of
Fw 44 J - export analogue of the Fw 44 F with the engines Sh 14 or Sh 14 a-4, a great series
Fw 44 H - a prototype with the engine Hirth HM 501 AND
Fw 44 M - a prototype with the engine Menasco C4S
Fw 44 N - a prototype with the engine Bramo 325
Source:
http://de.wikipedia.org/wiki/Focke-Wulf_Fw_44 .
Fw 44 and - biplane training aircraft with an engine Siemens-Halske Sh 14A, 2 prototypes
Fw 44 B - a slightly modified version with a longer fuselage, small series
Fw 44 C - conversion with an engine Argus As 8 B, 1 pcs
Fw 44 D - the main serial variant with an engine Siemens-Halske Sh 14 And
Fw 44 E - a modified version with an engine Argus As 8 B, approx 20 pcs
Fw 44 F - a slightly modified version with the engine Bramo Sh 14 A, marker lights, landing lights, a small storage space behind the seats; a small series of
Fw 44 J - export analogue of the Fw 44 F with the engines Sh 14 or Sh 14 a-4, a great series
Fw 44 H - a prototype with the engine Hirth HM 501 AND
Fw 44 M - a prototype with the engine Menasco C4S
Fw 44 N - a prototype with the engine Bramo 325
Source:
http://de.wikipedia.org/wiki/Focke-Wulf_Fw_44 .