penny[7], nepie[6], penie[6], penne[6], penni[6], pinen[6], nenie[5],
nepy[6], peny[6], nipy[6], piny[6], pnie[5], inny[5], inne[4],
pie[4], nep[4], pen[4], nip[4], pin[4], pni[4], yin[4], nie[3],
pe[3], pi[3], ny[3], ee[2], en[2], in[2], ni[2],
