Mêmes voyelles que portillon
boquillon,
bottillon,
cognition,
collision,
commission,
commixtions,
corbillon,
cornillon,
cotillon,
dormition,
gorillon,
horillon,
modillon,
morillon,
nolition,
nonillion,
octillion,
omission,
opilion,
opinion,
orillon,
positions,
postillon,
proscription,
provision,
taurillon,
tortillon,
volition.