Exact Reduplications

(baby-talk-like):
bonbon, 
bye-bye,
choo-choo,
chop-chop, 
chow-chow, 
dum-dum,
fifty-fifty, 
gee-gee, 
go-go, 
goody-goody, 
knock-knock, 
night-night,
no-no, 
pee-pee, 
poo-poo, 
pooh-pooh, 
rah-rah, 
so-so,
tsk-tsk, 
tuk-tuk,
tut-tut, 
wakey wakey, 
wee-wee