Mêmes consonnes que source
aciération, 
assertion, 
assurance, 
c.r.s., 
cerce, 
cerceau, 
cerceaux, 
ceriséen, 
circé, 
circée, 
cirrhus, 
cirrus, 
cirse, 
crs, 
cyrus, 
cération, 
cérès, 
incération, 
insertion, 
isrs, 
sarasson, 
sarisse, 
saros, 
sce, 
serration, 
sioracois, 
sirius, 
sorcier, 
sourcer, 
sourcier, 
sourcil, 
sourciller, 
sourcilleux, 
sourcé, 
souriceau, 
souriceaux, 
souricier, 
sous-races, 
surhausser, 
sursaut, 
sursauts, 
sursis, 
sérancer, 
sériation.