1) PL = "4"(N), 7, 4, 2
(https://blog.libero.it/BellaFerrara/getmedia.php?%2Fre.jgm%7DKghug%3F%259014%3C295%3F%2750%27%3Aailaemk%25cpcpgpCdllpg%07j%25%3B%05kmcnmgjgx%7B%27ek%2Fne%7Col-%3FW)
2)
(https://blog.libero.it/BellaFerrara/getmedia.php?%2Cre.jgm%7DKghug%3E%254314%3C295%3F%2750%27%3Aailaemk%25cpcpgpCdllpg%07j%25%3B%05kmcnmgjgx%7B%27ek%2Fne%7Col-%3FX)
(https://blog.libero.it/BellaFerrara/getmedia.php?%29re.jgm%7DKghug%3B%254314%3C295%3F%2750%27%3Aailaemk%25cpcpgpCdllpg%07j%25%3B%05kmcnmgjgx%7B%27ek%2Fne%7Col-%3FY)