% sstipics.t26 -- generated from sstipics.mp
\fmfL(22.04318,5.62872,lb){$\nwarrow k_2$}%
\fmfL(18.2709,16.25737,rb){$-k_{12} \swarrow $}%
\fmfL(12.59848,7.89122,t){$k_1 \rightarrow $}%
