sdt
sdu
sdx
sdz
sea
seb
sec
sed
see
sef
seg
seh
sei
sej
sek
sel
sen
seo
sep
seq
ser
ses
set
seu
sev
sew
sey
sez
sfb
sfe
sfm
sfs
sfw
sga
sgb
sgc
sgd
sge
sgg
sgh
sgi
sgj
sgk
sgm
sgp
sgr
sgs
sgt
sgu
sgw
ISO 639-3