Add expansion files

expansion/LagrangeGL_nm2.xml

expansion/LagrangeGL_nm3.xml

expansion/LagrangeGL_nm4.xml

expansion/LagrangeGL_nm5.xml

expansion/LagrangeGL_nm6.xml

expansion/LagrangeGL_nm7.xml

expansion/LagrangeGL_nm8.xml

expansion/LagrangeGL_nm9.xml

expansion/Lagrange_nm2.xml

expansion/Lagrange_nm3.xml

expansion/Lagrange_nm4.xml

expansion/Lagrange_nm5.xml

expansion/Lagrange_nm6.xml

expansion/Lagrange_nm7.xml

expansion/Lagrange_nm8.xml

expansion/Lagrange_nm9.xml

expansion/modified_nm2.xml

expansion/modified_nm3.xml

expansion/modified_nm4.xml

expansion/modified_nm5.xml