N=2,   # of fermion fields: 1,   # of boson fields: 0
weight(t)=7,   weight(s)=12,   fermion weights={3},   boson weights={}

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Problem

Find equations 

f  := 0
 t
with symmetries 
f  := D f  *f*q13 + D f  *D D f*q14 + D f  *f *q20 + D f  *D f*f*q9
 s     2 4x          2 3x  1 2         2 3x  x        2 2x  2

                                                                   2
       + D f  *D D f *q29 + D f  *D f*f*q8 + D f  *f  *q34 + (D f ) *f*q5
          2 2x  1 2 x        2 2x  1          2 2x  2x         2 x

       + D f *D f*D D f*q18 + D f *D f*f *q24 + D f *D D f  *q39
          2 x  2   1 2         2 x  2   x        2 x  1 2 2x

       + D f *D D f*D f*q19 + D f *D f *f*q6 + D f *D f*f *q25 + D f *f  *q37
          2 x  1 2   1         2 x  1 x         2 x  1   x        2 x  3x

              3             2                   2                 2
       + (D f) *f*q1 + (D f) *D D f *q26 + (D f) *D f*f*q3 + (D f) *f  *q31
           2             2     1 2 x         2     1           2     2x

       + D f*D D f  *q42 + D f*D D f *D f*q27 + D f*D D f*D f *q16
          2   1 2 3x        2   1 2 x  1         2   1 2   1 x

                                                      2
       + D f*D f  *f*q11 + D f*D f *f *q22 + D f*(D f) *f*q2 + D f*D f*f  *q32
          2   1 2x          2   1 x  x        2    1            2   1   2x

       + D f*f  *q40 + D D f  *q48 + D D f  *D f*q43 + D D f  *D f *q38
          2   4x        1 2 5x        1 2 3x  1         1 2 2x  1 x

                                                             2
       + D D f *D D f*f*q47 + D D f *D f  *q30 + D D f *(D f) *q28
          1 2 x  1 2           1 2 x  1 2x        1 2 x   1

       + D D f *f *f*q46 + D D f*D f  *q15 + D D f*D f *D f*q17
          1 2 x  x          1 2   1 3x        1 2   1 x  1

       - D D f*f  *f*q45 + D f  *f*q12 + D f  *f *q21 + D f  *D f*f*q10
          1 2   2x          1 4x          1 3x  x        1 2x  1

                               2
       + D f  *f  *q35 + (D f ) *f*q7 + D f *D f*f *q23 + D f *f  *q36
          1 2x  2x         1 x           1 x  1   x        1 x  3x

              3             2
       + (D f) *f*q4 + (D f) *f  *q33 + D f*f  *q41 + f  *q49 + f  *f *f*q44
           1             1     2x        1   4x        6x        2x  x
SYSTEM & SYMMETRY DO NOT SATISFY MINIMAL REQUIREMENTS!