Type of Problem $\langle$type$\rangle$

• (res): Resistance Problems
  $({\tt u, o, e}) \mapsto ({\tt f, t, s})$
• (mob): Mobility Problems
  $({\tt f, t, e}) \mapsto ({\tt u, o, s})$
• (mix): Mobility Problems with Fixed Particles
  $({\tt f, t, e, uf, of, ef}) \mapsto ({\tt u, o, s, ff, tf, sf})$