I am guessing there is a missing plus sign and you want to factor

mr + ns - nr - ms.

If so , mr -ms + ns - nr = m(r - s) - n( r -s ) = (r - s) (m - n)

The notes for Vande Mataram by Lata Mangeshkar are:

vandemaataram vandemaataram s r mp m p m p nS n S

sujalaam suphalaam S R n2 dp p d m gr

malayaja sheetalaam r p m m grg n s

shyaamalaam maaataram s r m p m p rn2 d p

vandemaataram m p nS n S

shubhra jyotsna pulakita yaaminim rm p n n n n S n S n S

pulla kusumita drumadala shoobhinim n n n S n S S R n2d n2d n2 dpdp

suhaasinim sumadhura bhaashinim r p m gr r n2d n2 pd m p

sukhadaam varadaam maataram r m p n n n nS n S

vande mataram vande maataram m p nSn S m p nS n S

Murrain.

It is spelled "a-n-t-i-d-i-s-e-s-t-a-b-l-i-s-h-m-e-n-t-a-r-i-a-n-i-s-m".

The correct spelling is 'A-n-t-i-d-i-s-e-s-t-a-b-l-i-s-h-m-e-n-t-a-r-i-a-n-i-s-m'.