Name generation in Python

namegen.py

import random
from datetime import datetime
random.seed(datetime.now())

CONSONANTS = list("bcdfghjklmnpqrstvwyxz")
VOWELS = list("aeiou")

ALPHABET = CONSONANTS + VOWELS

THIRD_LETTER_PROB = 0.15

ACCEPTABLE = [
    "am", "ar", "ap", "ay", "ah",
    "ba", "be", "bl", "bru",
    "ca", "co", "car", "ce",
    "da", "de", "di", "do", "du",
    "ed", "el", "et", "ex",
    "ga", "go", "gu",
    "he", "ha",
    "ian",
    "ja", "je", "jo", "jay",
    "ka", "kay", "kl",
    "la", "le", "li", "lo", "lay", "lan", "lu",
    "ma", "me", "mo", "may", "mat", "man",
    "na", "ne", "no", "nu", "nay", "nat",
    "or", "ow",
    "pa", "pe", "po", "pu", "pat",
    "ra", "re", "ri", "ro",
    "sa", "se", "sir",
    "ta", "te", "to", "tu", "ty",
    "va", "ve", "vi", "vo", "vay", "vit"
    "way", "we",
    "zak", "zac", "za"
]

UNACCEPTABLE = [
    "qa", "qe", "qi", "qo", "qu", "qy",
    "aq", "eq", "iq", "oq", "uq", "yq",
    "aj", "ej", "ij", "oj", "uj",
    "bl", "iv", "ij", "ik", "cm", "fl",
    "kl", "ux", "ox", "ix"
]

ACCEPTABLE_PROB = 0.76

def gen_syllable():
    # Pick a random first letter
    first = random.choice(ALPHABET)

    # If first is a consonant, second will have to be a vowel
    if first in CONSONANTS:
        second = random.choice(VOWELS)
    else:
        second = random.choice(CONSONANTS)

    third = None
    # Optionally, add a third letter
    if random.random() <= THIRD_LETTER_PROB:
        third = random.choice(ALPHABET)

    final = first + second
    if third: final += third
    return final

def gen_name():
    name = ""
    sz = random.randint(2, 3)
    last_si = "  "
    i = 0
    while sz > 0:
        si = gen_syllable()

        if random.random() <= ACCEPTABLE_PROB:
            if si not in ACCEPTABLE:
                si = random.choice(ACCEPTABLE)
                while last_si[-1] in CONSONANTS and si[0] in CONSONANTS:
                    si = random.choice(ACCEPTABLE)

        while si in UNACCEPTABLE:
            si = random.choice(ACCEPTABLE)

        name += si
        last_si = si
        sz -= 1
        i += 1

    return name.capitalize()

names = []
for i in range(20):
    name = "%s %s" % (gen_name(), gen_name())
    names.append(name)
names.sort()

for name in names:
    print(name)