oien[5], roie[5], noir[5], roin[5], iren[4], rein[4], irre[4],
oie[4], ion[4], roi[4], ein[3], nie[3], ire[3], ern[3], ren[3], irr[3],
on[3], ei[2], ne[2], in[2], er[2], re[2],
