All 1+1+0+0+1+1+1+2+3+4+7+15+28=64 subdirectly irreducible modular lattices up to size 13.
Calculations done in Python with a program developed by Peter Jipsen and Nathan Lawless.
The force-embedding JavaScript program is from John Snow's Lattice Drawing page, adapted for several lattices by Peter Jipsen

---

Peter Jipsen --- Chapman University --- March 2013