Analise combinatória, e remoção de repetições com strings

mess.py

#!/usr/bin/python3

values = ["John","have","easy","pass"]
# Parse value
def parsing (x):
    final=[]
    for i in x:
        final = final + i
    return final
# Normal
def mess (x):
    lista = []
    for i in values:
        lista.append(x+i)

    return lista

# Output
new = parsing(list(map(mess, values)))

print("---[Combinatories analysis]---")

print(set(new))

print("---[Lenght for each values]---")
print("Root values:"+ str(len(values)))
print("Results: "+str(len(new)))