X11 Plate, with (Dirichlet) at x=0 and at x=L.

X12 Plate, with (Dirichlet) at x=0 and
(Neumann) at x=L.

X13 Plate, with (Dirichlet) at x=0 and
(Convection) at x=L.

X21 Plate, with
(Neumann) at x=0 and (Dirichlet) at x=L.

X22 Plate, with
(Neumann) at x=0 and at x=L.

X23 Plate, with
(Neumann) at x=0 and
(Convection) at x=L.

X31 Plate, with
(Convection) at x=0 and (Dirichlet) at x=L.

X32 Plate, with
(Convection) at x=0 and
(Neumann) at x=L.

X33 Plate, with
(Convection) at x=0 and
(Convection) at x=L.