mondar+mandir bolak+balik
mondar mandir bolak balik .
m o n d a r WORD_BOUNDARY m a n d i r WORD_BOUNDARY b o l a k WORD_BOUNDARY b a l i k WORD_BOUNDARY
m o n d a r WORD_BOUNDARY m a n d i r WORD_BOUNDARY b o l a k WORD_BOUNDARY b a l i k WORD_BOUNDARY . WORD_BOUNDARY