gistfile1.py

# coding:utf-8

if __name__=='__main__':
    for i in range(4):
        raw_input()

    count=1
    first=''
    second=''
    while True:
        try:
            first+=raw_input()
            second+=raw_input()
            if count>=213:
                print first+'\n'+second+'\n'
                first=''
                second=''
                count=1
            else:
                first+=' '
                second+=' '
        except:
            if len(first):
                print first+'\n'
            if len(second):
                print second+'\n'
            break
        count+=1