cldf_id,cldf_description,cldf_targetParameterReference,cldf_sourceParameterReference,cldf_edgeIsDirected,Source,Target,Forms,Varieties,Languages,Families
LETTER-BOOK,,963,1612,1,LETTER,BOOK,5,5,5,3
LETTER-PUPILSTUDENT,,753,1612,1,LETTER,PUPIL (STUDENT),3,3,3,3
LETTER-SCHOOL,,673,1612,1,LETTER,SCHOOL,3,3,3,3