Starting grid:
ABBC
ABBC
0DD0
EFGH
EIJH

Solutions are concatenated strings of 'block' . 'direction',
where direction is r (right), l (left), u (up), d (down)

start-Dl-Gu-Gr-Dr-Eu-Il-Jl-Hl-Gd-Gd-Dr-Fu-Ju-Ir-Ed-Fl-Dl-Cd-Cd-Br-Ar-Fu-Fu-Eu-Il-Eu-Jl-Hl-Gl-Gu-Cd-Dr-Hu-Ir-Ir-Hd-Ad-Fr-Eu-Ju-Hl-Ad-Ad-Jr-Ju-Dl-Cu-Ir-Gd-Dl-Cl-Iu-Gr-Cd-Dr-Dr-Au-Ed-Fl-Ju-Au-Cl-Gl-Id-Dd-Bd-Jr-Fr-Eu-Hu-Jr-Fr-Au-Cu-Gl-Gl-Il-Il-Dd-Bd-Fd-Fr-Ar-Cu-Cu-Bl-Fd-Fd-Jd-Jd-Ar-Cr-Er-Hu-Hu-Bl-Fl-Fu-Du-Ir-Gr-Ir-Gr-Bd-Fl-Fl-Jl-Jl-Du-Gu-Gr-Br

final grid arrangement:
   HECA
   HECA
   FJDD
   0BBG
   0BBI


start-Dr-Fu-Fl-Dl-Hu-Jr-Ir-Er-Fd-Fd-Dl-Gu-Iu-Jl-Hd-Gr-Dr-Ad-Ad-Bl-Cl-Gu-Gu-Hu-Hu-Ir-Jr-Er-Fr-Fu-Ad-Dl-Eu-Jl-Jl-Ed-Cd-Gl-Hu-Iu-Er-Cd-Cd-Il-Iu-Dr-Au-Jl-Fd-Dr-Ar-Ju-Fl-Ad-Dl-Dl-Cu-Hd-Gr-Iu-Cu-Ar-Fr-Jd-Dd-Bd-Il-Gl-Hu-Eu-Il-Gl-Cu-Au-Fr-Fr-Jr-Jr-Dd-Bd-Gd-Gl-Cl-Au-Au-Br-Gd-Gd-Id-Id-Cl-Al-Hl-Eu-Eu-Br-Gr-Gu-Du-Jl-Fl-Jl-Fl-Bd-Gr-Gr-Ir-Ir-Du-Fu-Fl-Bl


final grid arrangement:
   CAHE
   CAHE
   DDIG
   FBB0
   JBB0