def compose(a1,a2):
    a3=[]
    l1 = len(a1)
    l2 = len(a2)
    for i in range(0,l2):
        a3.append(a2[i]+' ')
        a3.append(a1[i]+' ')
    for j in range(i+1,l1):
        a3.append(a1[i]+' ')
    return a3

def checkidentical(a1,a2):
    for i in a1:
        for j in a2:
            if i==j:
                print i


flag = True
while flag:
    f1 = raw_input("inserisci la prima frase con almeno 5 parole: ")
    if(len(f1.split()) < 5):
        print "riprova, almeno 5 parole"
    else:
        flag = False

flag = True

while flag:
    f2 = raw_input("inserisci la seconda frase con almeno 5 parole: ")
    if(len(f2.split()) < 5):
        print "riprova, almeno 5 parole"
    else:
        flag = False

f3list = []
f1list = f1.split()
f2list = f2.split()
l1 = len(f1list)
l2 = len(f2list)

if(l1>l2):
    f3list = compose(f1list,f2list)
else:
    f3list = compose(f2list,f1list)
f3phrase =  "".join(f3list)
print f3phrase

checkidentical(f1list,f2list)

p1 = raw_input("prima parola: ")
p2 = raw_input("seconda parola: ")

if( (p1 == f1list[0]) or (p1 == f2list[-1]) or (p2 == f1list[0]) or (p2 == f2list[-1])):
    print 'parola giusta'
else:
    print 'parole errate'