Fm7

 ======
 1-11-1  1st fret
 ------
 ||||||
 ------
 |2||||
 ------
 ||||4|
 ------
 ||||||
 ------
 FCEAEF
   bbb

or:

 ======
 1-1111  1st fret
 ------
 ||||||
 ------
 |3||||
 ------
 ||||||
 ------
 ||||||
 ------
 FCEACF
   bb

or:

 XX
 ======
 ~~~~~~
 ------
 ||1|||  3rd fret
 ------
 ||||23
 ------
 |||4||
 ------
 ||||||
 ------
   FCEA
     bb

or:

 X
 ======
 ~~~~~~
 ------
 ||1-1|  6th fret
 ------
 |2|3|4
 ------
 ||||||
 ------
  FAEFC
   bb

Notes:  I  : F
       IIIb: Ab
        V  : C
       VIIb: Eb