#Justin Lumpkin
#Feb 4 2020
#Int5
#Enloe
#Potter
filename ='F:/2srtest.txt'
def alpha(strs):
    if strs==[]:
        return None
    else:
        rtn=strs[0]
        for s in strs:
            if len(s)>len(rtn) or len(s)==len(rtn)and s