neppe[11], neper[8],
nepp[10], perm[9], epen[7], peer[7], reep[7], meer[6], eren[4], neer[4], rene[4],
pep[9], per[6], rep[6], nee[3], ree[3], ern[3], ren[3],
ne[2], er[2], re[2],
