n = 4
    l=[]
    t = []
    for i in range(n):
        line = input() #first input: I like Trains 2: I like apples 3: I like pears 4: I like bananas
        if i%2 == 0:
            t += line
        else:
            l+=line
    for i in range(len(l)):
         print(l[i])
    for i in range(len(t)):
         print(t[i])