Change one Letter

dud = bud.....................

bud = bid...

bid = lid...

lid = dig..............

dig..............pig

pig = pie..................

pie.............tie

tie =toe....................

toe............foe

foe ... few

few = new...............

..new = now..

now = how...................

how = wow...

wow=bow..............

bow = now..............

now = not...

not ... son

Son .....sun

sun = gun..............

gun ... fun

fun = fur...

fur ... fry

fry = rye.......................

rye = ray.....

ray ... rat

rat = tap...

tap = nap................

nap...............pad

Pad = dad.......

Dad.............Bad

bad = bat..

bat................fat

fat ... fin

fin = fir.........

fir = fur.....

fur = for.....................

for = foe.....

foe = joe...............

joe = job..