Acoording my works old munda language were being spoken in Siraiki wasaib and these languages are origin of Proto -Sraiki ,therefore Siraiki is not an Aryan language.but it belong old Munda language family which is now changed.
When we study about old words of Munda languages we can found easly several Munda words in Siraiki although Munda languages are being spoken far from Siraiki
Table of Munda languages Siraiki and English
Siraiki----Mundari----Ho Kohl(sing bhoom)---- English